A researcher selected three groups on the basis of I.Q.(smart,average,dopey).All subjects were matched on the basis of age,weight,and health.The smart subjects ran a mile faster than the average ones,who ran faster than the dopey ones.The researcher can conclude that:
A) the time to run a mile is related to intelligence
B) being smart allows you to run a mile quickly
C) being stupid causes you to run a mile slowly
D) running speed is determined by intelligence

Question

Quizplus · Accepted Answer

The researcher can conclude that there is a relationship between the time to run a mile and intelligence, as the data shows a pattern where groups with higher I.Q. levels ran faster. However, this does not necessarily imply causation or determine the direction of the relationship.

A Researcher Selected Three Groups on the Basis of I