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Generating & calculating

The infer pipeline for hypothesis testing requires four steps to calculate the null distribution: specify, hypothesize, generate, and calculate.

Let's continue the pipeline you began in the previous coding exercise. We'll get a set of differences in proportions that are distributed as though the null hypothesis, that the proportion of late shipments is the same across freight cost groups, is true.

late_shipments is available; dplyr, infer, and ggplot2 are loaded.

This exercise is part of the course

Hypothesis Testing in R

View Course

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Extend the pipeline to generate 2000 permutations
generated <- late_shipments %>% 
  specify(
    late ~ freight_cost_group, 
    success = "Yes"
  ) %>% 
  hypothesize(null = "independence") %>% 
  ___

# See the result
generated
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