When statisticians talk about effect size, they are referring to
A) the probability of a Type II error
B) whether the significance level was large or small
C) whether the$\alpha$ level was large or small
D) how different the sample mean was from the null hypothesis mean.

Question

Quizplus · Accepted Answer

Effect size refers to the magnitude of the difference between the sample mean and the null hypothesis mean, indicating how substantial the observed effect is in the context of the research.

When Statisticians Talk About Effect Size, They Are Referring to α\alphaα

When Statisticians Talk About Effect Size, They Are Referring to $\alpha$