In a hypothetical study, I want to examine whether a new teaching method improves students’ English vocabulary. I test the same group of students before and after applying ...
In a hypothetical study, I want to examine whether a new teaching method improves students’ English vocabulary. I test the same group of students before and after applying the method.
In this case, there is one group measured twice, and the data come from the same participants. Therefore, I would use a paired samples t-test because it compares the means of two related measurements.
The reason for this choice is that the scores are dependent (pre-test and post-test from the same students), so a paired samples t-test is more appropriate than an independent samples t-test, which is used for different groups.