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  3. Inference for Numerical Data in R

Exercise

Compare pairwise means

Compare means of vocabulary scores using the pairwise.t.test() function for all pairings of social classes.

Instructions

100 XP
  • Conduct a pairwise t-test on vocabulary scores and social class. Set p.adjust.method to "none" (we'll adjust the significance level, not the p-value).
  • Tidy the result.
  • Do the data provide convincing evidence of a difference in the average vocabulary scores of those who self identified as middle class and those who self identified as lower class?