Question

each hour, for several hours, the owner of a bakery recorded the number of customers who entered the store. the box - and - whisker plot (sometimes called a boxplot) summarizes the data. use the box - and - whisker plot to answer the following. (a) what is the median number of customers? (b) what is the smallest number of customers? (c) what is the first quartile (q1) of the numbers of customers?

Explanation:

Step1: Identify median in box - plot

The line inside the box represents the median. From the box - and - whisker plot, the median number of customers is 30.

Step2: Identify smallest value

The end of the left - most whisker represents the smallest value. From the plot, the smallest number of customers is 15.

Step3: Identify first quartile

The left - hand side of the box represents the first quartile ($Q_1$). From the plot, $Q_1 = 25$.

Answer:

(a) 30
(b) 15
(c) 25