Question

daily pizza sales
thin crust
deep dish
110 120 130 140 150 160
what is the first quartile for deep dish?
125
155
130
135

Explanation:

Step1: Recall Quartile in Box Plot

In a box - and - whisker plot, the first quartile ($Q_1$) is the left end of the box. For the deep - dish pizza sales box plot, we look at the left boundary of the box for deep dish.

Step2: Analyze the Plot

From the given box - plot for deep dish, the left end of the box (which represents the first quartile) is at 130.

Answer:

130