A t ratio which is calculated on data from a repeated-measures design, using 20 subjects, should yield
A) 19 degrees of freedom
B) 38 degrees of freedom
C) 18 degrees of freedom
D) cannot tell from the above information

Question

Quizplus · Accepted Answer

In a repeated-measures design, the degrees of freedom for the t-test are calculated based on the number of subjects minus one. Therefore, with 20 subjects, the degrees of freedom would be 20 - 1 = 19.

A T Ratio Which Is Calculated on Data from a Repeated-Measures