Question

The math project scores for two different classes are shown in the box plot below.

(the picture)

Which statement about Class A and Class B math project scores is NOT supported by the graph?

A) The range of scores for both classes is 3.
B) The interquartile range for Class A is greater than the interquartile range for Class B.
C) The interquartile range for Class B is 2.
D) The median score for Class B is 0.5 greater than the median score for Class A.

Answer 1

A

Explanation:

The bar for Class A is 1.5-3.5. 3-5 - 1.5 = 2 (interquartile range)

The bar for Class B is 2-3. 3-2 = 1 (interquartile range)

Range = 2-1 = 1

Because the range does not equal to 3, we automatically know that this statement is false. But for D, the line represents the median score for each class.