Answer:
A. The interquartile range (IQR) for town A is 20 and it is greater than town B which has IQR = 10.
Step-by-step explanation:
<em>Interquartile range measures the skewness using 50% of the data. It is the difference between the third quartile and the first quartile. </em>
<em>Also, the end points of box plot shows the First and Third Quartile.</em>
Thus Town A has First Quartile = 20
Third Quartile = 40
⇒ IQR = 40 - 20 = 20
and, Town B has First Quartile = 35
Third Quartile = 45
⇒ IQR = 45 - 35 = 10
Also, <em>Standard deviation can't be calculate using Box- Plot.</em>
Thus, Option A is the only correct option.