What Is Variance in Statistics? Definition, Formula, and Example

Answered: Under what conditions should you use the pooled-variance t test to examine possible differences in the means of two independent populations? | bartleby

Answered: Find the pooled variance for the two samples. Compute the estimated standard error for the sample mean differences (i.e. for the two groups). If the sample mean… | bartleby

SOLVED: Population means, which of the following assumptions is in testing the difference between two sample procedure that uses a pooled estimate of the common variance σ²? Not true for the two -a. The population variances should be equal or nearly equal. b. The populations from which the samples are drawn must be normally distributed. c. The two samples must be independent of each other. d. The two samples must be small and selected at random from the populations.