In using the t-test to compare the means of two groups,the degrees of freedom are calculated as _____.
A) n₁ - n₂ - 2
B) n₁ + n₂ - 2
C) n₁ x n₂ -2
D) n₁ / n₂ - 2

Question

Quizplus · Accepted Answer

The degrees of freedom for a t-test comparing the means of two independent groups is calculated as the sum of the sample sizes of both groups minus 2, which is n₁ + n₂ - 2.

In Using the T-Test to Compare the Means of Two