Infer

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The objective of this package is to perform statistical inference using an expressive statistical grammar that coheres with the tidyverse design framework.

Installation

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To install the current stable version of infer from CRAN:

install.packages("infer")

To install the developmental version of infer, make sure to install remotes first:

install.packages("remotes")
remotes::install_github("andrewpbray/infer")

Examples

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These examples assume that mtcars has been overwritten so that the variables cyl, vs, am, gear, and carb are factors.

mtcars <- as.data.frame(mtcars) %>%
  mutate(cyl = factor(cyl),
          vs = factor(vs),
          am = factor(am),
          gear = factor(gear),
          carb = factor(carb))

Hypothesis test for a difference in proportions:

mtcars %>%
  specify(am ~ vs, success = "1") %>%
  hypothesize(null = "independence") %>%
  generate(reps = 100, type = "permute") %>%
  calculate(stat = "diff in props", order = c("1", "0"))

Confidence interval for a difference in means:

mtcars %>%
  specify(mpg ~ am) %>%
  generate(reps = 100, type = "bootstrap") %>%
  calculate(stat = "diff in means", order = c("1", "0"))