A statistical phenomenon that occurs when a nonrandom sample is measured twice and results in the sample mean moving closer to the population mean is referred to as ____________________.
A) regression threat
B) attrition threat
C) instrumentation threat
D) testing threat

Question

Quizplus · Accepted Answer

Regression threat, also known as regression to the mean, is the phenomenon where if a variable is extreme on its first measurement, it will tend to be closer to the average on its second measurement, and vice versa.

A Statistical Phenomenon That Occurs When a Nonrandom Sample Is