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:

Box - plots display the five - number summary (minimum, first quartile $Q_1$, median, third quartile $Q_3$, maximum). The interquartile range (IQR) is calculated as $IQR = Q_3 - Q_1$. Since box - plots show $Q_1$ and $Q_3$, the IQR can be compared. 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:

A. interquartile range