Question

The box plot shows the total amount of time, in minutes, the students of a class spend studying each day:

A box plot is titled Daily Study Time and labeled Time (min). The left most point on the number line is 40 and the right most point is 120. The box is labeled 57 on the left edge and 112 on the right edge. A vertical line is drawn inside the rectangle at the point 88. The whiskers are labeled as 43 and 116.

What information is provided by the box plot?

A. The lower quartile for the data
B. The number of students who provided information
C. The mean for the data
D. The number of students who studied for more than 112.5 minutes

Answer 1

A. The lower quartile of data, which is represented by the first “whisker”

Not B or D because we don’t know the total, just where the data falls. Since we don’t know the total number of data points, we also can’t find the mean from C