Which of the Following Statements About Effect Sizes Is TRUE

Multiple Choice

Which of the following statements about effect sizes is TRUE?

A) A large effect size indicates a high level of practical significance.
B) The concept of effect size is a statistical abstraction that has no practical application.
C) Small effect sizes can be important under the right circumstances.
D) Effect sizes are useful in estimating the probability of making a Type I error but not in estimating the probability of making a Type II error.