Question

Use the stacked box and whisker plot in the diagram below. What conclusion can be made about the interquartile range of the two data sets?

Answer 1

Recall that the interquartile range is the data contained between the first and the third quartile.

In this case, the first period has an interquartile range from 78 to 80, and the second period has an interquartile range from 70 to 80.

Therefore, the interquartile range for the 2nd period is greater.

Answer: The interquartile range for 2nd period is greater.