Module 19: T-Test for Correlated Groups

Question 1

Correlated-groups t-test (or t-test for dependent groups or samples)

Answer 1

compares the performance of participants in two groups. In this case, the same people are used in each group (a within-participants design) or different participants are matched between groups (a matched-participants design).

Question 2

Conceptual formula t-test

Answer 2

t = (sample difference - expected difference (H0)) / standard error of the difference