Principal Phillipi used a random sample of 20 student records to determine how far, in miles, students live from the school. The results are as shown. 3 comma 4 comma 5 comma 3 comma 4 comma 5 comma 6 comma 5 comma 4 comma 3 comma 2 comma 3 comma 4 comma 5 comma 6 comma 4 comma 8 comma 4 comma 3 comma 2 What is the mean distance that his students live from the school, rounded to the nearest tenth?
Add the 20 distances to get a total of 83 miles. Divide by the 20 students: 83 ÷ 20 = 4.15 miles per student. Rounded to the nearest tenth, 4.15 is 4.2 miles, so the correct choice is A, 4.2 miles.
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