Question: Why do we used pooled variance when conducting an independent-samples t-test? A. It helps normalize the data from the data set. B. It provides a

Why do we used pooled variance when conducting an independent-samples t-test?

A. It helps normalize the data from the data set.

B. It provides a weighted average of the two samples'varianceswhen there are unequal sample sizes.

C. We do not use pooled (or average)variance at all;it is always the individual variance associated with each sample.

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