In an independent-samples t test, the _____ is used rather than the _____.
A) standard deviation; pooled variance
B) pooled variance; standard deviation
C) standard deviation; variance
D) variance; pooled variance

Question

Quizplus · Accepted Answer

In an independent-samples t test, the pooled variance is used rather than the standard deviation to estimate the population variance. This is necessary because the two samples being compared may have different variances, and thus pooling their variances provides a more accurate estimate of the population variance. Therefore, choice B is correct - pooled variance is used rather than the standard deviation.

In an Independent-Samples T Test, the _____ Is Used Rather