The test statistic for sphericity is based on a chi-square transformation of the determinant of the correlation matrix.A large value of the test statistic will favor the acceptance of the null hypothesis.

Question

Quizplus · Accepted Answer

A large value of the test statistic for sphericity indicates a violation of the sphericity assumption, leading to the rejection of the null hypothesis that assumes equal variances of the differences between all combinations of related groups.

The Test Statistic for Sphericity Is Based on a Chi-Square