The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying 1 1.5 2.5 3 3.5 4 4.5 5 5.5 6 Midterm Grades 63 66 69 72 75 78 81 84 90 96 Step 3 of 3: Calculate the correlation coefficient, r. Round your answer to three decimal places.
Added by Jose Manuel J.
Step 1
Mean of hours spent studying = (1 + 1.5 + 2.5 + 3 + 3.5 + 4 + 4.5 + 5 + 5.5 + 6) / 10 = 3.65 Mean of midterm grades = (63 + 66 + 69 + 72 + 75 + 78 + 81 + 84 + 90 + 96) / 10 = 77.4 Show more…
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