Question: In Exercises 18, use the data in the table below. The values are based on a scatterplot in An SAT Coaching Program That Works, by

In Exercises 1–8, use the data in the table below. The values are based on a scatterplot in

“An SAT Coaching Program That Works,” by Jack Kaplan, Chance, Vol. 15, No. 1. The values are math SAT scores of students before and after taking an SAT preparation course.

Before 460 470 490 490 510 510 600 620 610 After 480 510 500 610 590 630 630 660 690 1. Finding Statistics Find the mean, median, range, standard deviation, and variance of the before scores.

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