Question

the box plot was created by using which pieces of data?
30 40 50 60 70 80
an upper quartile of 56 and a median of 50
a lower quartile of 56 and a median of 50
a median of 56 and a lower quartile of 50
a median of 56 and an upper quartile of 50

Explanation:

Step1: Recall box - plot components

A box - plot shows the minimum, lower quartile ($Q_1$), median ($Q_2$), upper quartile ($Q_3$), and maximum. The line inside the box is the median, and the right - hand side of the box is the upper quartile.

Step2: Analyze the box - plot

In the given box - plot, the line inside the box is at 50, so the median is 50. The right - hand side of the box is at 56, so the upper quartile is 56.

Answer:

an upper quartile of 56 and a median of 50