Question

Consider the data sets represented by the two box plots. Which one has a larger interquartile range, and what is a good estimation of that larger interquartile range?

A) The plot on the top; about 80
B) The plot on the bottom; about 55
C) The plot on the top; about 25
D) They are both the same, about 80

Answer 1

You minus the UQ (Upper Quartile), represented by the line at 95 for the second box plot, from the LQ, represented at 40 for the second box plot, showing you the answer is B, about 55.

You would repeat the process for the top box plot, just to check :)