Question

For which of these pairs of variables might it be possible to draw a straight line on a scatter plot to model the relationship between the variables? Select three that apply.
A.
time and distance

B.
weight and height

C.
age and gender

D.
length and widt

Answer 1

A, B, and D.

Reason: Time vs. distance, weight vs. height, and length vs. width are pairs of quantitative variables that can show a linear relationship. Age vs. gender includes a categorical variable (gender), so a straight‑line scatterplot model is not appropriate.