Why is it important to look at the effect size?
A)Because p values are not affected by Sphericity corrections but they do alter effect sizes.
B)Because p values can be affected by Sphericity errors but they do not alter effect sizes.
C)Because p values can be affected by Sphericity corrections and alter effect sizes.
D)Because p values can be affected by Sphericity corrections but they do not alter effect sizes.

Question

Quizplus · Accepted Answer

Effect size is important because it provides a quantitative measure of the strength of a phenomenon, independent of sample size. While p values can indicate whether an effect is statistically significant, they do not convey the magnitude of the effect. Sphericity corrections can affect p values by adjusting degrees of freedom in repeated measures ANOVA, for example, but they do not directly alter the calculated effect size, which is why understanding both p values and effect sizes gives a more complete picture of the results.

Why Is It Important to Look at the Effect Size