20. The two box-and-whisker plots below show the scores on a math exam for two classes. What do the interquartile ranges tell you about the two classes?

Question

20.   The two box-and-whisker plots below show the scores on a math exam for two classes. What do the interquartile ranges tell you about the two classes?

anonymous · Answer

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kropot72 · Answer

The interquartile range is the difference between the upper and lower quartiles of a set of numbers.
The approximate interquartile ranges for the scores of the two classes are:
Class A: 89 - 66 = 23
Class B: 94 - 79 = 15
This shows that the spread in the scores of Class A is over 50% higher than the spread of the scores of Class B.