Cheryl used age, education, and income to predict scores on a life satisfaction survey. Her regression equation accounted for 58% of the variance in life satisfaction. She collects a new sample and applies her equation.
-This process is referred to as
A) discriminate testing
B) sample attenuation
C) cross-validation
D) regression reliability

Question

Quizplus · Accepted Answer

Cross-validation involves testing a model or equation on a new sample to determine if it still accurately predicts the outcome. This is exactly what Cheryl is doing by applying her regression equation to a new sample. Choice A (discriminate testing) is not a relevant term in this context, and sample attenuation (Choice B) refers to a decrease in effect size due to measurement error, which is not what is happening here. Regression reliability (Choice D) is also not the best choice, as it is a more general term that refers to the consistency and stability of a regression equation over time and across different samples.

Cheryl Used Age, Education, and Income to Predict Scores on a Life