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.
-In Cheryl's second sample, the variance she accounts for will likely __________ due to __________.
A) decrease, attentuation
B) increase, replication
C) decrease, shrinkage
D) increase, regression.

Question

Quizplus · Accepted Answer

The variance that Cheryl accounts for in her second sample is likely to decrease due to shrinkage. Shrinkage occurs when a regression equation that has been developed using a particular sample is applied to a new sample, and the predicted scores are less extreme than the original sample. This means that the variance in the predicted scores will be smaller than in the original sample.

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