Professor Jordan has suggested to his students that a correlation exists between the number of hours spent in serious study and one's grade on the final exam. He would like his students to improve their test scores by increasing study time. The professor is describing a

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A positive correlation suggests that as one variable increases, so does the other variable. In this case, as the number of hours spent studying increases, the grade on the final exam also increases. To improve test scores, the professor is encouraging students to increase their study time, which supports the idea of a positive correlation.

Professor Jordan Has Suggested to His Students That a Correlation