The amount of difference that exists between two populations with unknown means (which you sample from) is the issue of
A) hypothesis testing or confidence intervals
B) Type I and Type II errors
C) the .05 or .01$\alpha$level
D) effect size.

Question

Quizplus · Accepted Answer

Effect size measures the magnitude of difference between two populations, providing a quantitative measure of the strength of a phenomenon.

The Amount of Difference That Exists Between Two Populations with Unknown