Using the conservative test in which variances were not pooled that was described in the text, on how many degrees of freedom would the t test on groups of 65 and 21 participants be based?
A) 65 - 1 = 64 df
B) 21 - 1 = 20 df
C) 65 + 21 - 2 = 84 df
D) (65 + 21) ÷ 2 = 43 df

Question

Quizplus · Accepted Answer

When using the conservative test where variances are not pooled, the degrees of freedom for the t-test are based on the smaller of the two groups. For a group of 21 participants, the degrees of freedom would be 21 - 1 = 20 df.

Using the Conservative Test in Which Variances Were Not Pooled