Because of the assumption that the population variances are equal,when conducting an analysis of variance
A)fewer degrees of freedom are required.
B)sample variances are not important.
C)an average estimate of the population variance is computed.
D)population parameters are used instead of sample statistics.

Question

Quizplus · Accepted Answer

When conducting an analysis of variance assuming equal population variances, an average estimate of the population variance is computed based on the variance of the sample means. This is known as the pooled variance estimate. The sample variances are still important, as they contribute to the calculation of the pooled variance estimate, but the assumption of equal population variances allows for a more efficient use of the data by combining information from all the groups into a single estimate of variance.

Because of the Assumption That the Population Variances Are Equal,when