Answers Math 7 B M12 2526 S2 Comparing Box Plots — Unit testQuestion 19

19

QuizMultiple Choice

Comparing Box Plots — Unit test

Question 19 • Math 7 B (M12 25/26 S2)

Myra polled twenty-five students in her class to determine the number of movies the students attended at the theater this year. The results are in the table. She decided to find the mean of a sample using Row 1 and Row 5.Number of Movies AttendedRow 165286Row 220452Row 334301Row 452633Row 523224What is the mean of her sample?

Answer

A

2

B

4

C

6

D

8

Explanation

Row 1 contains 6, 5, 2, 8, and 6, which add to 27. Row 5 contains 2, 3, 2, 2, and 4, which add to 13. The sample has 10 students, so its mean is (27 + 13) ÷ 10 = 4 movies. The correct choice is 4.

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