The choice of an appropriate test for comparing two population means depends on whether we deal with ____________.
A)Qualitative or quantitative data
B)Independent or matched-pairs sampling
C)The equality or lack of equality of population variances
D)All of the above

Question

Quizplus · Accepted Answer

The choice of an appropriate test for comparing two population means depends on all of the factors mentioned in options A, B, and C. Therefore, the best choice is D. We need to consider whether the data is qualitative or quantitative to choose between a t-test or a non-parametric test. The type of sampling (independent or matched-pairs) affects the degrees of freedom in the calculations of the test statistic. Lastly, the equality or lack of equality of population variances is important when choosing between a pooled or unpooled variance estimate.

The Choice of an Appropriate Test for Comparing Two Population