Question

the box plots show the data distributions for the number of customers who used a coupon each hour during a two - day sale.
number of coupon users per hour
day 1
day 2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
which measure of variability can be compared using the box plots?
interquartile range
standard deviation
mean
median

Explanation:

Step1: Recall box - plot features

Box - plots display quartiles. The inter - quartile range (IQR) is the difference between the third quartile (Q3) and the first quartile (Q1). It can be directly observed and compared from box - plots.

Step2: Analyze other options

Standard deviation cannot be directly obtained from box - plots. Mean is not shown on box - plots. Median is a measure of central tendency, not variability.

Answer:

interquartile range