We must calculate the pooled variance because ______.
A) we need to compute a standard error for each sample
B) we need to compute a single standard error for two samples
C) we do not have information about the variance of each sample
D) all of these

Question

Quizplus · Accepted Answer

The pooled variance is used to compute a single standard error when comparing two samples, assuming they have equal variances.

We Must Calculate the Pooled Variance Because ______