Question

what is the interquartile range of the data shown in the box plot?

Explanation:

Step1: Identify Q1 and Q3

In a box - plot, the lower edge of the box is the first quartile (Q1) and the upper edge of the box is the third quartile (Q3). From the box - plot, Q1 = 74 and Q3 = 66.

Step2: Calculate the inter - quartile range (IQR)

The formula for the inter - quartile range is IQR=Q3 - Q1. So, IQR = 74−66.
$IQR = 8$

Answer:

8