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<!DOCTYPE html>
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<title> 6 Exercise 1: Test your knowledge | R for Conditional Process Analysis</title>
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<meta property="og:title" content=" 6 Exercise 1: Test your knowledge | R for Conditional Process Analysis" />
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<meta name="author" content="Lara Kobilke, IKMZ, University of Zurich" />
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<li class="chapter" data-level="1" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html"><i class="fa fa-check"></i><b>1</b> Tutorial: Installing & Understanding R/R Studio</a>
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<li class="chapter" data-level="1.3.1" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#on-windows"><i class="fa fa-check"></i><b>1.3.1</b> On Windows</a></li>
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<li class="chapter" data-level="1.5.1" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#source-writing-your-own-code"><i class="fa fa-check"></i><b>1.5.1</b> Source: Writing your own code</a></li>
<li class="chapter" data-level="1.5.2" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#console-printing-results"><i class="fa fa-check"></i><b>1.5.2</b> Console: Printing results</a></li>
<li class="chapter" data-level="1.5.3" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#environment-overview-of-objects"><i class="fa fa-check"></i><b>1.5.3</b> Environment: Overview of objects</a></li>
<li class="chapter" data-level="1.5.4" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#plotshelppackages-do-everything-else"><i class="fa fa-check"></i><b>1.5.4</b> Plots/Help/Packages: Do everything else</a></li>
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<li class="chapter" data-level="1.6" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#take-aways"><i class="fa fa-check"></i><b>1.6</b> Take-Aways</a></li>
<li class="chapter" data-level="1.7" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#additional-tutorials"><i class="fa fa-check"></i><b>1.7</b> Additional tutorials</a></li>
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<li class="chapter" data-level="2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html"><i class="fa fa-check"></i><b>2</b> Tutorial: Workflow in R</a>
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<li class="chapter" data-level="2.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#defining-your-working-directory"><i class="fa fa-check"></i><b>2.1</b> Defining your working directory</a></li>
<li class="chapter" data-level="2.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#packages"><i class="fa fa-check"></i><b>2.2</b> Packages</a>
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<li class="chapter" data-level="2.2.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#installing-packages"><i class="fa fa-check"></i><b>2.2.1</b> Installing packages</a></li>
<li class="chapter" data-level="2.2.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#activating-packages"><i class="fa fa-check"></i><b>2.2.2</b> Activating packages</a></li>
<li class="chapter" data-level="2.2.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#getting-information-about-packages"><i class="fa fa-check"></i><b>2.2.3</b> Getting information about packages</a></li>
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<li class="chapter" data-level="2.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#help"><i class="fa fa-check"></i><b>2.3</b> Help?!</a>
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<li class="chapter" data-level="2.3.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#finding-information-about-packages"><i class="fa fa-check"></i><b>2.3.1</b> Finding information about packages</a></li>
<li class="chapter" data-level="2.3.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#finding-information-about-functions"><i class="fa fa-check"></i><b>2.3.2</b> Finding information about functions</a></li>
<li class="chapter" data-level="2.3.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#searching-for-help-online"><i class="fa fa-check"></i><b>2.3.3</b> Searching for help online</a></li>
<li class="chapter" data-level="2.3.4" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#interrupting-r"><i class="fa fa-check"></i><b>2.3.4</b> Interrupting R</a></li>
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<li class="chapter" data-level="2.4" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#saving-loading-cleaning-coderesults"><i class="fa fa-check"></i><b>2.4</b> Saving, loading & cleaning code/results</a>
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<li class="chapter" data-level="2.4.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#saving-your-code"><i class="fa fa-check"></i><b>2.4.1</b> Saving your code</a></li>
<li class="chapter" data-level="2.4.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#saving-your-results"><i class="fa fa-check"></i><b>2.4.2</b> Saving your results</a></li>
<li class="chapter" data-level="2.4.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#loading-working-spaces"><i class="fa fa-check"></i><b>2.4.3</b> Loading working spaces</a></li>
<li class="chapter" data-level="2.4.4" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#clean-your-working-space"><i class="fa fa-check"></i><b>2.4.4</b> Clean your working space</a></li>
<li class="chapter" data-level="2.4.5" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#take-aways-1"><i class="fa fa-check"></i><b>2.4.5</b> Take Aways</a></li>
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<li class="chapter" data-level="2.5" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#additional-tutorials-1"><i class="fa fa-check"></i><b>2.5</b> Additional tutorials</a></li>
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<li class="chapter" data-level="3" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html"><i class="fa fa-check"></i><b>3</b> Tutorial: Using R as a calculator</a>
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<li class="chapter" data-level="3.1" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html#using-variables-for-calculation"><i class="fa fa-check"></i><b>3.1</b> Using variables for calculation</a></li>
<li class="chapter" data-level="3.2" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html#using-vectors-for-calculation"><i class="fa fa-check"></i><b>3.2</b> Using vectors for calculation</a></li>
<li class="chapter" data-level="3.3" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html#take-aways-2"><i class="fa fa-check"></i><b>3.3</b> Take-Aways</a></li>
</ul></li>
<li class="chapter" data-level="4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html"><i class="fa fa-check"></i><b>4</b> Tutorial: Objects & structures in R</a>
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<li class="chapter" data-level="4.1" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#types-of-data"><i class="fa fa-check"></i><b>4.1</b> Types of data</a>
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<li class="chapter" data-level="4.1.1" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#accessing-variables-in-data-sets"><i class="fa fa-check"></i><b>4.1.1</b> Accessing variables in data sets</a></li>
<li class="chapter" data-level="4.1.2" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#numbers"><i class="fa fa-check"></i><b>4.1.2</b> Numbers</a></li>
<li class="chapter" data-level="4.1.3" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#text"><i class="fa fa-check"></i><b>4.1.3</b> Text</a></li>
<li class="chapter" data-level="4.1.4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#factors"><i class="fa fa-check"></i><b>4.1.4</b> Factors</a></li>
<li class="chapter" data-level="4.1.5" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#dates"><i class="fa fa-check"></i><b>4.1.5</b> Dates</a></li>
<li class="chapter" data-level="4.1.6" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#missing-datanas"><i class="fa fa-check"></i><b>4.1.6</b> Missing data/NAs</a></li>
<li class="chapter" data-level="4.1.7" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#logicalother-operators"><i class="fa fa-check"></i><b>4.1.7</b> Logical/other operators</a></li>
</ul></li>
<li class="chapter" data-level="4.2" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#types-of-objects"><i class="fa fa-check"></i><b>4.2</b> Types of objects</a>
<ul>
<li class="chapter" data-level="4.2.1" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#scalars"><i class="fa fa-check"></i><b>4.2.1</b> Scalars</a></li>
<li class="chapter" data-level="4.2.2" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#vectors"><i class="fa fa-check"></i><b>4.2.2</b> Vectors</a></li>
<li class="chapter" data-level="4.2.3" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#data-frames-matrices"><i class="fa fa-check"></i><b>4.2.3</b> Data frames & matrices</a></li>
<li class="chapter" data-level="4.2.4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#lists"><i class="fa fa-check"></i><b>4.2.4</b> Lists</a></li>
<li class="chapter" data-level="4.2.5" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#other-types-of-objects"><i class="fa fa-check"></i><b>4.2.5</b> Other types of objects</a></li>
</ul></li>
<li class="chapter" data-level="4.3" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#take-aways-3"><i class="fa fa-check"></i><b>4.3</b> Take Aways</a></li>
<li class="chapter" data-level="4.4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#additional-tutorials-2"><i class="fa fa-check"></i><b>4.4</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="5" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html"><i class="fa fa-check"></i><b>5</b> Tutorial: Reading data in/out</a>
<ul>
<li class="chapter" data-level="5.1" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#getting-data-into-r"><i class="fa fa-check"></i><b>5.1</b> Getting data into R</a></li>
<li class="chapter" data-level="5.2" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#getting-data-out-of-r"><i class="fa fa-check"></i><b>5.2</b> Getting data out of R</a></li>
<li class="chapter" data-level="5.3" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#other-packages-for-getting-data-intoout-of-r"><i class="fa fa-check"></i><b>5.3</b> Other packages for getting data into/out of R</a></li>
<li class="chapter" data-level="5.4" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#take-aways-4"><i class="fa fa-check"></i><b>5.4</b> Take Aways</a></li>
<li class="chapter" data-level="5.5" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#additional-tutorials-3"><i class="fa fa-check"></i><b>5.5</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="6" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html"><i class="fa fa-check"></i><b>6</b> Exercise 1: Test your knowledge</a>
<ul>
<li class="chapter" data-level="6.1" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-1"><i class="fa fa-check"></i><b>6.1</b> Task 1</a></li>
<li class="chapter" data-level="6.2" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-2"><i class="fa fa-check"></i><b>6.2</b> Task 2</a></li>
<li class="chapter" data-level="6.3" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-3"><i class="fa fa-check"></i><b>6.3</b> Task 3</a></li>
<li class="chapter" data-level="6.4" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-4"><i class="fa fa-check"></i><b>6.4</b> Task 4</a></li>
<li class="chapter" data-level="6.5" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-5"><i class="fa fa-check"></i><b>6.5</b> Task 5</a></li>
</ul></li>
<li class="chapter" data-level="7" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html"><i class="fa fa-check"></i><b>7</b> Tutorial: Data management with tidyverse</a>
<ul>
<li class="chapter" data-level="7.1" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#why-not-stick-with-base-r"><i class="fa fa-check"></i><b>7.1</b> Why not stick with Base R?</a></li>
<li class="chapter" data-level="7.2" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#tidyverse-packages"><i class="fa fa-check"></i><b>7.2</b> Tidyverse packages</a></li>
<li class="chapter" data-level="7.3" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#tidy-data"><i class="fa fa-check"></i><b>7.3</b> Tidy data</a></li>
<li class="chapter" data-level="7.4" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#the-pipe-operator"><i class="fa fa-check"></i><b>7.4</b> The pipe operator</a></li>
<li class="chapter" data-level="7.5" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#data-transformation-with-dplyr"><i class="fa fa-check"></i><b>7.5</b> Data transformation with dplyr</a>
<ul>
<li class="chapter" data-level="7.5.1" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#select"><i class="fa fa-check"></i><b>7.5.1</b> select()</a></li>
<li class="chapter" data-level="7.5.2" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#filter"><i class="fa fa-check"></i><b>7.5.2</b> filter()</a></li>
<li class="chapter" data-level="7.5.3" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#arrange"><i class="fa fa-check"></i><b>7.5.3</b> arrange()</a></li>
<li class="chapter" data-level="7.5.4" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#mutate"><i class="fa fa-check"></i><b>7.5.4</b> mutate()</a></li>
<li class="chapter" data-level="7.5.5" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#simmarize-group_by"><i class="fa fa-check"></i><b>7.5.5</b> simmarize() [+ group_by()]</a></li>
<li class="chapter" data-level="7.5.6" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#chaining-functions-in-a-pipe"><i class="fa fa-check"></i><b>7.5.6</b> Chaining functions in a pipe</a></li>
</ul></li>
<li class="chapter" data-level="7.6" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#take-aways-5"><i class="fa fa-check"></i><b>7.6</b> Take-Aways</a></li>
<li class="chapter" data-level="7.7" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#additional-tutorials-4"><i class="fa fa-check"></i><b>7.7</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="8" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html"><i class="fa fa-check"></i><b>8</b> Exercise 2: Test your knowledge</a>
<ul>
<li class="chapter" data-level="8.1" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-1-1"><i class="fa fa-check"></i><b>8.1</b> Task 1</a></li>
<li class="chapter" data-level="8.2" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-2-1"><i class="fa fa-check"></i><b>8.2</b> Task 2</a></li>
<li class="chapter" data-level="8.3" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-3-1"><i class="fa fa-check"></i><b>8.3</b> Task 3</a></li>
<li class="chapter" data-level="8.4" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-4-1"><i class="fa fa-check"></i><b>8.4</b> Task 4</a></li>
<li class="chapter" data-level="8.5" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-5-1"><i class="fa fa-check"></i><b>8.5</b> Task 5</a></li>
<li class="chapter" data-level="8.6" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-6"><i class="fa fa-check"></i><b>8.6</b> Task 6</a></li>
<li class="chapter" data-level="8.7" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-7"><i class="fa fa-check"></i><b>8.7</b> Task 7</a></li>
</ul></li>
<li class="chapter" data-level="9" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html"><i class="fa fa-check"></i><b>9</b> Tutorial: Data visualization with ggplot</a>
<ul>
<li class="chapter" data-level="9.1" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#why-not-stick-with-base-r-1"><i class="fa fa-check"></i><b>9.1</b> Why not stick with Base R?</a></li>
<li class="chapter" data-level="9.2" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#components-of-a-ggplot-graph"><i class="fa fa-check"></i><b>9.2</b> Components of a ggplot graph</a></li>
<li class="chapter" data-level="9.3" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#installing-activating-ggplot"><i class="fa fa-check"></i><b>9.3</b> Installing & activating ggplot</a></li>
<li class="chapter" data-level="9.4" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#building-your-first-plot"><i class="fa fa-check"></i><b>9.4</b> Building your first plot</a>
<ul>
<li class="chapter" data-level="9.4.1" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#data"><i class="fa fa-check"></i><b>9.4.1</b> Data</a></li>
<li class="chapter" data-level="9.4.2" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#aesthetics"><i class="fa fa-check"></i><b>9.4.2</b> Aesthetics</a></li>
<li class="chapter" data-level="9.4.3" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#geometrics"><i class="fa fa-check"></i><b>9.4.3</b> Geometrics</a></li>
<li class="chapter" data-level="9.4.4" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#scales"><i class="fa fa-check"></i><b>9.4.4</b> Scales</a></li>
<li class="chapter" data-level="9.4.5" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#themes"><i class="fa fa-check"></i><b>9.4.5</b> Themes</a></li>
<li class="chapter" data-level="9.4.6" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#labs"><i class="fa fa-check"></i><b>9.4.6</b> Labs</a></li>
<li class="chapter" data-level="9.4.7" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#facets"><i class="fa fa-check"></i><b>9.4.7</b> Facets</a></li>
<li class="chapter" data-level="9.4.8" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#saving-graphs"><i class="fa fa-check"></i><b>9.4.8</b> Saving graphs</a></li>
</ul></li>
<li class="chapter" data-level="9.5" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#other-common-plot-types"><i class="fa fa-check"></i><b>9.5</b> Other common plot types</a>
<ul>
<li class="chapter" data-level="9.5.1" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#bar-plots"><i class="fa fa-check"></i><b>9.5.1</b> bar plots</a></li>
<li class="chapter" data-level="9.5.2" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#box-plots"><i class="fa fa-check"></i><b>9.5.2</b> box plots</a></li>
</ul></li>
<li class="chapter" data-level="9.6" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#take-aways-6"><i class="fa fa-check"></i><b>9.6</b> Take Aways</a></li>
<li class="chapter" data-level="9.7" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#additional-tutorials-5"><i class="fa fa-check"></i><b>9.7</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="10" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html"><i class="fa fa-check"></i><b>10</b> Exercise 3: Test your knowledge</a>
<ul>
<li class="chapter" data-level="10.1" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html#task-1-2"><i class="fa fa-check"></i><b>10.1</b> Task 1</a></li>
<li class="chapter" data-level="10.2" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html#task-2-2"><i class="fa fa-check"></i><b>10.2</b> Task 2</a></li>
<li class="chapter" data-level="10.3" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html#task-3-2"><i class="fa fa-check"></i><b>10.3</b> Task 3</a></li>
</ul></li>
<li class="chapter" data-level="11" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html"><i class="fa fa-check"></i><b>11</b> Tutorial: Linear regression</a>
<ul>
<li class="chapter" data-level="11.1" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#knowing-your-data"><i class="fa fa-check"></i><b>11.1</b> Knowing your data</a></li>
<li class="chapter" data-level="11.2" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#visual-inspection-of-linear-trends"><i class="fa fa-check"></i><b>11.2</b> Visual inspection of linear trends</a></li>
<li class="chapter" data-level="11.3" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#pearsons-r"><i class="fa fa-check"></i><b>11.3</b> Pearson´s r</a></li>
<li class="chapter" data-level="11.4" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#ols-regression"><i class="fa fa-check"></i><b>11.4</b> OLS regression</a></li>
<li class="chapter" data-level="11.5" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#standardizing-coefficients"><i class="fa fa-check"></i><b>11.5</b> Standardizing coefficients</a></li>
<li class="chapter" data-level="11.6" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#multiple-regression"><i class="fa fa-check"></i><b>11.6</b> Multiple regression</a></li>
<li class="chapter" data-level="11.7" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#standardized-multiple-regression"><i class="fa fa-check"></i><b>11.7</b> Standardized multiple regression</a></li>
<li class="chapter" data-level="11.8" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#take-aways-7"><i class="fa fa-check"></i><b>11.8</b> Take Aways</a></li>
<li class="chapter" data-level="11.9" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#additional-tutorials-6"><i class="fa fa-check"></i><b>11.9</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="12" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html"><i class="fa fa-check"></i><b>12</b> Exercise 4: Test your knowledge</a>
<ul>
<li class="chapter" data-level="12.1" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-1-3"><i class="fa fa-check"></i><b>12.1</b> Task 1</a></li>
<li class="chapter" data-level="12.2" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-2-3"><i class="fa fa-check"></i><b>12.2</b> Task 2</a></li>
<li class="chapter" data-level="12.3" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-3-3"><i class="fa fa-check"></i><b>12.3</b> Task 3</a></li>
<li class="chapter" data-level="12.4" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-4-2"><i class="fa fa-check"></i><b>12.4</b> Task 4</a></li>
<li class="chapter" data-level="12.5" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-5-2"><i class="fa fa-check"></i><b>12.5</b> Task 5</a></li>
<li class="chapter" data-level="12.6" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-6-1"><i class="fa fa-check"></i><b>12.6</b> Task 6</a></li>
</ul></li>
<li class="chapter" data-level="13" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html"><i class="fa fa-check"></i><b>13</b> Tutorial: Mediation analysis</a>
<ul>
<li class="chapter" data-level="13.1" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#introduction-to-mediation"><i class="fa fa-check"></i><b>13.1</b> Introduction to mediation</a></li>
<li class="chapter" data-level="13.2" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#difference-between-mediation-and-moderation"><i class="fa fa-check"></i><b>13.2</b> Difference between mediation and moderation</a></li>
<li class="chapter" data-level="13.3" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#two-step-process-of-mediation"><i class="fa fa-check"></i><b>13.3</b> Two-step process of mediation</a></li>
<li class="chapter" data-level="13.4" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#statistical-representation-and-equations"><i class="fa fa-check"></i><b>13.4</b> Statistical representation and equations</a>
<ul>
<li class="chapter" data-level="13.4.1" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#direct-effect-c"><i class="fa fa-check"></i><b>13.4.1</b> Direct effect <em>c′</em></a></li>
<li class="chapter" data-level="13.4.2" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#indirect-effect-ab"><i class="fa fa-check"></i><b>13.4.2</b> Indirect effect <em>ab</em></a></li>
<li class="chapter" data-level="13.4.3" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#total-effect"><i class="fa fa-check"></i><b>13.4.3</b> Total effect</a></li>
</ul></li>
<li class="chapter" data-level="13.5" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#example"><i class="fa fa-check"></i><b>13.5</b> Example</a>
<ul>
<li class="chapter" data-level="13.5.1" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#knowing-your-data-1"><i class="fa fa-check"></i><b>13.5.1</b> Knowing your data</a></li>
<li class="chapter" data-level="13.5.2" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#visual-inspection-of-linear-trends-1"><i class="fa fa-check"></i><b>13.5.2</b> Visual inspection of linear trends</a></li>
<li class="chapter" data-level="13.5.3" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#pearsons-r-1"><i class="fa fa-check"></i><b>13.5.3</b> Pearson’s r</a></li>
<li class="chapter" data-level="13.5.4" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#fit-models"><i class="fa fa-check"></i><b>13.5.4</b> Fit models</a></li>
<li class="chapter" data-level="13.5.5" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#using-processr"><i class="fa fa-check"></i><b>13.5.5</b> Using processR</a></li>
</ul></li>
<li class="chapter" data-level="13.6" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#take-aways-8"><i class="fa fa-check"></i><b>13.6</b> Take Aways</a></li>
<li class="chapter" data-level="13.7" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#additional-tutorials-7"><i class="fa fa-check"></i><b>13.7</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="14" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html"><i class="fa fa-check"></i><b>14</b> Exercise 5: Test your knowledge</a>
<ul>
<li class="chapter" data-level="14.1" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-1-4"><i class="fa fa-check"></i><b>14.1</b> Task 1</a></li>
<li class="chapter" data-level="14.2" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-2-4"><i class="fa fa-check"></i><b>14.2</b> Task 2</a></li>
<li class="chapter" data-level="14.3" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-3-4"><i class="fa fa-check"></i><b>14.3</b> Task 3</a></li>
<li class="chapter" data-level="14.4" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-4-3"><i class="fa fa-check"></i><b>14.4</b> Task 4</a></li>
<li class="chapter" data-level="14.5" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-5-3"><i class="fa fa-check"></i><b>14.5</b> Task 5</a></li>
<li class="chapter" data-level="14.6" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-6-2"><i class="fa fa-check"></i><b>14.6</b> Task 6</a></li>
<li class="chapter" data-level="14.7" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-7-1"><i class="fa fa-check"></i><b>14.7</b> Task 7</a></li>
</ul></li>
<li class="chapter" data-level="15" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html"><i class="fa fa-check"></i><b>15</b> Tutorial: Moderation analysis</a>
<ul>
<li class="chapter" data-level="15.1" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#introduction-to-moderation"><i class="fa fa-check"></i><b>15.1</b> Introduction to moderation</a></li>
<li class="chapter" data-level="15.2" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#one-step-process-of-moderation"><i class="fa fa-check"></i><b>15.2</b> One-step process of moderation</a></li>
<li class="chapter" data-level="15.3" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#statistical-representation-and-equations-1"><i class="fa fa-check"></i><b>15.3</b> Statistical representation and equations</a></li>
<li class="chapter" data-level="15.4" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#example-1"><i class="fa fa-check"></i><b>15.4</b> Example</a>
<ul>
<li class="chapter" data-level="15.4.1" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#knowing-your-data-2"><i class="fa fa-check"></i><b>15.4.1</b> Knowing your data</a></li>
<li class="chapter" data-level="15.4.2" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#visual-inspection-of-linear-trends-2"><i class="fa fa-check"></i><b>15.4.2</b> Visual inspection of linear trends</a></li>
<li class="chapter" data-level="15.4.3" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#fit-models-1"><i class="fa fa-check"></i><b>15.4.3</b> Fit models</a></li>
<li class="chapter" data-level="15.4.4" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#standardization-and-mean-centering"><i class="fa fa-check"></i><b>15.4.4</b> Standardization and mean-centering</a></li>
<li class="chapter" data-level="15.4.5" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#follow-up-analysis-pobing-the-interaction"><i class="fa fa-check"></i><b>15.4.5</b> Follow-up analysis: Pobing the interaction</a></li>
<li class="chapter" data-level="15.4.6" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#using-processr-1"><i class="fa fa-check"></i><b>15.4.6</b> Using processR</a></li>
</ul></li>
<li class="chapter" data-level="15.5" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#take-aways-9"><i class="fa fa-check"></i><b>15.5</b> Take Aways</a></li>
<li class="chapter" data-level="15.6" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#additional-tutorials-8"><i class="fa fa-check"></i><b>15.6</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="16" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html"><i class="fa fa-check"></i><b>16</b> Exercise 6: Test your knowledge</a>
<ul>
<li class="chapter" data-level="16.1" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-1-5"><i class="fa fa-check"></i><b>16.1</b> Task 1</a></li>
<li class="chapter" data-level="16.2" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-2-5"><i class="fa fa-check"></i><b>16.2</b> Task 2</a></li>
<li class="chapter" data-level="16.3" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-3-5"><i class="fa fa-check"></i><b>16.3</b> Task 3</a></li>
<li class="chapter" data-level="16.4" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-4-4"><i class="fa fa-check"></i><b>16.4</b> Task 4</a></li>
<li class="chapter" data-level="16.5" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-5-4"><i class="fa fa-check"></i><b>16.5</b> Task 5</a></li>
<li class="chapter" data-level="16.6" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-6-3"><i class="fa fa-check"></i><b>16.6</b> Task 6</a></li>
</ul></li>
<li class="chapter" data-level="17" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html"><i class="fa fa-check"></i><b>17</b> Tutorial: CPA and model fit</a>
<ul>
<li class="chapter" data-level="17.1" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#what-is-cpa"><i class="fa fa-check"></i><b>17.1</b> What is CPA?</a></li>
<li class="chapter" data-level="17.2" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#fitting-models-with-lavaan"><i class="fa fa-check"></i><b>17.2</b> Fitting models with lavaan</a></li>
<li class="chapter" data-level="17.3" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#example-evaluate-model-fit-for-complex-models"><i class="fa fa-check"></i><b>17.3</b> Example: Evaluate model fit for complex models</a>
<ul>
<li class="chapter" data-level="17.3.1" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#theory-driven-hypotheses"><i class="fa fa-check"></i><b>17.3.1</b> Theory-driven hypotheses</a></li>
<li class="chapter" data-level="17.3.2" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#model-fit-and-evaluation"><i class="fa fa-check"></i><b>17.3.2</b> Model fit and evaluation</a></li>
</ul></li>
<li class="chapter" data-level="17.4" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#take-aways-10"><i class="fa fa-check"></i><b>17.4</b> Take-Aways</a></li>
<li class="chapter" data-level="17.5" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#additional-tutorials-9"><i class="fa fa-check"></i><b>17.5</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="18" data-path="exercise-7-test-your-knowledge.html"><a href="exercise-7-test-your-knowledge.html"><i class="fa fa-check"></i><b>18</b> Exercise 7: Test your knowledge</a>
<ul>
<li class="chapter" data-level="18.1" data-path="exercise-7-test-your-knowledge.html"><a href="exercise-7-test-your-knowledge.html#task-1-6"><i class="fa fa-check"></i><b>18.1</b> Task 1</a></li>
<li class="chapter" data-level="18.2" data-path="exercise-7-test-your-knowledge.html"><a href="exercise-7-test-your-knowledge.html#task-2-6"><i class="fa fa-check"></i><b>18.2</b> Task 2</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html"><i class="fa fa-check"></i>Solutions</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-1"><i class="fa fa-check"></i>Solutions for Exercise 1</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-7"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-7"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-6"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-5"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-5"><i class="fa fa-check"></i>Task 5</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-2"><i class="fa fa-check"></i>Solutions for Exercise 2</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-8"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-8"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-7"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-6"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-6"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-4"><i class="fa fa-check"></i>Task 6</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-7-2"><i class="fa fa-check"></i>Task 7</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-3"><i class="fa fa-check"></i>Solutions for Exercise 3</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-9"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-9"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-8"><i class="fa fa-check"></i>Task 3</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-4"><i class="fa fa-check"></i>Solutions for Exercise 4</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-10"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-10"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-9"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-7"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-7"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-5"><i class="fa fa-check"></i>Task 6</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-5"><i class="fa fa-check"></i>Solutions for Exercise 5</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-11"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-11"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-10"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-8"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-8"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-6"><i class="fa fa-check"></i>Task 6</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-7-3"><i class="fa fa-check"></i>Task 7</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-6"><i class="fa fa-check"></i>Solutions for Exercise 6</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-12"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-12"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-11"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-9"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-9"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-7"><i class="fa fa-check"></i>Task 6</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-7"><i class="fa fa-check"></i>Solutions for Exercise 7</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-13"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-13"><i class="fa fa-check"></i>Task 2</a></li>
</ul></li>
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<div id="exercise-1-test-your-knowledge" class="section level1" number="6">
<h1><span class="header-section-number"> 6</span> Exercise 1: Test your knowledge</h1>
<p><strong>After working through Exercise 1, you’ll…</strong></p>
<ul>
<li>have assessed how well you know R and RStudio</li>
<li>know what chapters and concepts you might want to repeat again</li>
<li>have managed to apply the basic concepts of R to data</li>
</ul>
<div id="task-1" class="section level2" number="6.1">
<h2><span class="header-section-number">6.1</span> Task 1</h2>
<p>Below you will see multiple choice questions. Please try to identify the correct answers. 1, 2, 3 and 4 correct answers are possible for each question.</p>
<p><strong>1. What panels are part of RStudio?</strong></p>
<ul>
<li>source</li>
<li>console</li>
<li>input</li>
<li>packages, files & plots</li>
</ul>
<p><strong>2. How do you activate R packages after you have installed them?</strong></p>
<ul>
<li>import.packages()</li>
<li>install.packages()</li>
<li>package()</li>
<li>library()</li>
</ul>
<p><strong>3. How do you create a vector in R with elements 1, 2, 3?</strong></p>
<ul>
<li>cbind(1,2,3)</li>
<li>cb(1,2,3)</li>
<li>c(1,2,3)</li>
<li>cmb(1,2,3)</li>
</ul>
<p><strong>4. Imagine you have a vector called ‘vector’ with 10 numeric elements. How do you retrieve the 8th element?</strong></p>
<ul>
<li>vector[-2]</li>
<li>vector[„-2“]</li>
<li>vector[8]</li>
<li>vector[„8“]</li>
</ul>
<p><strong>5. Imagine you have a vector called ‘hair’ with 5 elements: brown, black, red, blond, other. How do you retrieve the color ‘blond’?</strong></p>
<ul>
<li>hair[4]</li>
<li>hair[„4“]</li>
<li>hair[blond]</li>
<li>hair[„blond“]</li>
</ul>
</div>
<div id="task-2" class="section level2" number="6.2">
<h2><span class="header-section-number">6.2</span> Task 2</h2>
<p>Create a numeric vector with 8 values and assign the name <em>age</em> to the vector. First, display all elements of the vector. Then print only the 5th element. After that, display all elements except the 5th. Finally, display the elements at the positions 6 to 8.</p>
</div>
<div id="task-3" class="section level2" number="6.3">
<h2><span class="header-section-number">6.3</span> Task 3</h2>
<p>Create a non-numeric, i.e. character, vector with 4 elements and assign the name <em>eye_color</em> to the vector. First, print all elements of this vector to the console. Then have only the value in the 2nd element displayed, then all values except the 2nd element. At the end, display the elements at the positions 2 to 4.</p>
</div>
<div id="task-4" class="section level2" number="6.4">
<h2><span class="header-section-number">6.4</span> Task 4</h2>
<p>Create a data frame called <em>data</em>. The data frame should contain the following variables (in this order):</p>
<ul>
<li>a vector called <em>food</em>. It should contain 5 elements, namely the names of your five favorite dishes.</li>
<li>a vector called <em>description</em>. For every dish mentioned in <em>food</em>, please describe the dish in a single sentence (for instance, if the first food you describe is “pizza”, you could write: “This is an Italian dish, which I prefer with a lot of cheese.”)</li>
<li>a vector called <em>rating</em>. Rate every dish mentioned in <em>food</em> with 1-5 (using every number only once), i.e., by rating your absolute favorite dish out of all five with a 1 and your least favorite dish out of all five with a 5.</li>
</ul>
<p><strong>Hint</strong>: For me, the data frame would look something like this:</p>
<pre><code>## food description Rating
## 1 pizza Italian dish, I actually prefer mine with little cheese 3
## 2 pasta Another Italian dish 1
## 3 ice cream The perfect snack in summer 2
## 4 crisps Potatoes and oil - a luxurious combination 4
## 5 passion fruit A fruit that makes me think about vacation 5</code></pre>
</div>
<div id="task-5" class="section level2" number="6.5">
<h2><span class="header-section-number">6.5</span> Task 5</h2>
<p>Can you sort the data in your prior data set by rating - with your favorite dish (i.e., the one rated “1”) on top of the list and your least favorite dish (i.e., the one rated “5”) on the bottom?</p>
<p><strong>Important</strong>: You do <em>not</em> yet know this command - you’ll have to google for the right solution. Please do and note down the exact search terms you used for googling.</p>
<p><strong>Hint</strong>: For me, the data frame would look something like this:</p>
<pre><code>## food description Rating
## 1 pasta Another Italian dish 1
## 2 ice cream The perfect snack in summer 2
## 3 pizza Italian dish, I actually prefer mine with little cheese 3
## 4 crisps Potatoes and oil - a luxurious combination 4
## 5 passion fruit A fruit that makes me think about vacation 5</code></pre>
<p>When you’re ready to look at the solutions, you can find them here: <a href="solutions.html#solutions-for-exercise-1">Solutions for Exercise 1</a>.</p>
<p>Now that you’re well versed in data types and structures, let’s move on to data management in the tidyverse in the <a href="tutorial-data-management-with-tidyverse.html#tutorial-data-management-with-tidyverse">Tutorial: Data management with tidyverse</a>.</p>
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