Question

what is the iqr of the data set represented by the box - and - whisker plot?
a 28
b 9
c 13

Explanation:

Step1: Recall IQR formula

IQR = Q3 - Q1 (where Q3 is third - quartile and Q1 is first - quartile)

Step2: Identify Q1 and Q3 from box - and - whisker plot

From the plot, Q1 is approximately 70 and Q3 is approximately 83.

Step3: Calculate IQR

IQR=83 - 70 = 13

Answer:

C. 13