Correlational Designs We need all of the following to calculate Y' using linear regression except the
A)mean for X.
B)mean for Y.
C)score on variable X.
D)score on variable Y.

Question

Quizplus · Accepted Answer

To calculate $Y'$ (the predicted value of Y) using linear regression, you need the mean of X (to center the scores), the mean of Y (to calculate the regression line's intercept), and a specific score on variable X (to predict $Y'$). The actual score on variable Y is not needed for the prediction; it's what you're trying to predict.

Correlational Designs We Need All of the Following to Calculate