The degrees of freedom for the independent groups t test are equal to: A)n₁ - n₂ + 2 B)n₁ + n₂ - 2 C)n₁ - n₂ - 2 D)n₁ + n₂ + 2

Question

Quizplus · Accepted Answer

The formula for degrees of freedom for independent groups t test is (n1 - 1) + (n2 - 1), where n1 and n2 are sample sizes of the two groups being compared. This can be simplified as (n1 + n2) - 2, which is equivalent to n₁ + n₂ - 2.

The Degrees of Freedom for the Independent Groups T Test