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 an independent samples t-test are calculated as the sum of the sample sizes of the two groups, minus two (df=n1+n2-2). Therefore, the correct formula is n₁ + n₂ - 2.

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