By pooling the variance estimates from the two populations,we increase the _____ on which the estimate of ó² is based and thereby obtain a better estimate. A)degrees of freedom B)power C)population size D)standard error

Question

Quizplus · Accepted Answer

Pooling the variance estimates from the two populations increases the degrees of freedom on which the estimate of σ² is based. This is because when we pool the variances, we are effectively combining the information from two samples, which increases the overall sample size and the degrees of freedom. Increasing the degrees of freedom reduces the standard error and increases the precision of the estimate. Therefore, option A is the best choice.

By Pooling the Variance Estimates from the Two Populations,we Increase