A mathematics teacher wants to compare the test scores of her 1st period class and her 2nd period class. In order to compare the test scores, the teacher creates the following box plots.
Which of the following statements are true regarding the box plots above?
I. The range of 1st period's test scores is equal to the range of 2nd period's test scores.
II. There is a greater percentage of test scores between 85 and 95 in 1st period than in 2nd period.
III. The interquartile range of 1st period's test scores is less than the interquartile range of 2nd period's test scores.
IV. The median of 1st period's test scores is less than the median of 2nd period's test scores.
A.
II and III
B.
II and IV
C.
I and III
D.
I and IV
D. I and IV
The first statement is true because the range of both box plots is the same.
The fourth statement is true because the median of the 1st period's test scores appears to be lower than the median of the 2nd period's test scores.