When using an independent-samples t-Test, which of the following is considered when calculating the degrees of freedom?
A)The number of values that are free to vary in each group if we know the mean and sample size of each group.
B)The number of values we would need to know in each group in order to deduce the remaining values, in light of the mean and sample size of each group.
C)Each group's sample size minus 1.
D)When combining both groups, the overall sample size minus 2.
E)All of these.

Question

Quizplus · Accepted Answer

All of the choices describe different ways of conceptualizing or calculating the degrees of freedom for an independent-samples t-Test. Choice A and B are essentially describing the same concept from slightly different perspectives. Choice C directly states the formula for calculating degrees of freedom for each individual group in many statistical tests, including the t-Test. Choice D provides the formula for calculating the overall degrees of freedom for an independent-samples t-Test, which involves combining the sample sizes of both groups and then subtracting 2.

When Using an Independent-Samples T-Test, Which of the Following Is