Question

a pediatrician wants to determine the relation that may exist between a childs height and head circumference. she randomly selects 8 children, measures their height and head circumference and obtains the data shown in the table. (a) if the pediatrician wants to use height to predict head circumference, determine which variable is the explanatory variable and which is the response variable. the explanatory variable is head circumference and the response variable is height. the explanatory variable is height and the response variable is head circumference.

Explanation:

The pediatrician wants to use height to predict head - circumference. In a prediction relationship, the variable used to make the prediction is the explanatory variable, and the variable being predicted is the response variable. So height is used to explain changes in head - circumference.

Answer:

The explanatory variable is height and the response variable is head circumference.