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Questions
MKF5912 - S1 2025 Week 10 - Quiz
Single choice
Suppose that a study compares the means of two groups. There are 40 males in Group 1 and 35 females in Group 2. The degrees of freedom for this study when using the t-test for the difference between means is:
Options
A.a. 73
B.b. 74
C.c. 75
D.d. 72
View Explanation
Standard Answer
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Approach Analysis
When comparing the means of two independent groups with a t-test, the common approach is to use the pooled-variance t-test which assumes equal variances; the degrees of freedom in that case are n1 + n2 − 2. Here, Group 1 has 40 individuals and Group 2 has 35 individuals, so the calculation is 40 + 35 − 2 ......Login to view full explanationLog in for full answers
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