Find the low,Q₁, median,Q₃, and high.

First, find the low and high numbers of the five-number summary for the given data set.

Recall that the five-number summary is used to create a box-and-whisker plot. The five-number summary consists of the lowest value, the first quartile,Q₁,

the median, the third quartile,Q₃,

and the highest value of a data set.

The given data set144566789is ordered.