If there is a .75 correlation between the hours that students devote to studying and their grades,
A) a third variable, such as motivation and interest may account for the relationship.
B) we can conclusively say that this strong correlation indicates a causal relationship.
C) there is a weak, almost non-existent relationship.
D) there is a strong negative correlation.

Question

Quizplus · Accepted Answer

A correlation of .75 is a strong positive correlation, which suggests that there is a relationship between studying and grades. However, it is not safe to conclude that studying causes better grades. There may be other factors at play, such as motivation, interest, or intelligence. Therefore, option A is the best choice, as it acknowledges the possibility of a third variable that could account for the relationship.

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