the box - and - whisker plot below represents some data set. what percentage of the data values are between…

Explanation:

Step1: Identify quartiles in box - and - whisker plot

In a box - and - whisker plot, the left - hand side of the box is the first quartile ($Q_1$), the line inside the box is the median ($Q_2$), and the right - hand side of the box is the third quartile ($Q_3$). Here, assume 8 is $Q_1$ and 18 is $Q_2$.

Step2: Recall the property of quartiles

The first quartile ($Q_1$) represents the 25th percentile and the median ($Q_2$) represents the 50th percentile.

Step3: Calculate the percentage of data

The percentage of data between $Q_1$ and $Q_2$ is $50 - 25=25%$.

Answer:

25%