A college professor gathers data from his students in order to better understand how the total number of points earned on homework assignments during a semester relates to the total number of points earned on the final exam. The scatterplot below shows the relationship between total points earned on homework assignments and total points earned on the final exam for a sample of students. The correlation between these variables is r = 0.75, and the regression equation that can be used to predict points earned on the final exam based on points earned on homework assignments is given below.

Predicted final exam points = 17.51 + 0.62 (homework points)

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