Question

ashley surveyed 20 students to find out how many minutes it took them to get to school. the box and whisker plot shows her results. how many students took 16 minutes or less to get to school? students

Explanation:

Step1: Recall box - and - whisker plot properties

In a box - and - whisker plot, the first quartile ($Q_1$) marks the 25th percentile.

Step2: Identify the position of 16 minutes

From the box - and - whisker plot, 16 minutes is at the first quartile.

Step3: Calculate number of students

Since 25% of the 20 students are at or below the first quartile, we calculate $0.25\times20$.
$0.25\times20 = 5$

Answer:

5