Jackie Correlates the Number of Hours Spent Studying with Final

question 45

Multiple Choice

Jackie correlates the number of hours spent studying with final grades in a course and finds the correlation is +0.55.When Phil correlates the number of classes missed with final grades in a course,he finds the correlation is -0.75.You should predict that,when the results are plotted using a scatter diagram,

• A) Jackie's data points will cluster more tightly than Phil's data points.
• B) all Phil's data points will fall on a flat horizontal line running from left to right.
• C) Phil's data points will cluster more tightly than Jackie's data points.
• D) all Jackie's data points will fall on a vertical line running from top to bottom.

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