A scatter plot and regression line can be used for all of the following except
A) to determine if any (x, y) pairs are outliers.
B) to predict y at a specific value of x.
C) to estimate the average y at a specific value of x.
D) to determine if a change in x causes a change in y.

Question

Quizplus · Accepted Answer

A scatter plot and regression line can be used to identify outliers, predict or estimate values of y for given x values, but they cannot determine causality. Determining if a change in x causes a change in y requires experimental or quasi-experimental designs, not just observational data analysis.

A Scatter Plot and Regression Line Can Be Used for All