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d940bc9 · Nov 4, 2016

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Data Cleaning course.

  1. Script run_analysis.R performs
  • Download the dataset if it does not already exist in the working directory
  • Load the activity and feature info
  • Loads both the training and test datasets, keeping only those columns which reflect a mean or standard deviation
  • Loads the activity and subject data for each dataset, and merges those columns with the dataset
  • Merges the two datasets
  • Converts the activity and subject columns into factors
  • Creates a tidy dataset that consists of the average (mean) value of each variable for each subject and activity pair.
  • The end result is shown in the file tidy.csv

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