Compare pairwise means

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

Deze oefening maakt deel uit van de cursus

Inference for Numerical Data in R

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?

Probeer deze oefening eens door deze voorbeeldcode in te vullen.

# Run a pairwise t-test on wordsum and class, without adjustment
t_test_results <- ___

# Tidy the result
___