Need ! what is the interquartile range of the data set? enter the answer in the box. key: 1|5 means 15 a stem-and-leaf plot with a stem value of 2 with a leaf value of 0 and 5, a stem value of 3 with a leaf value of 0, 0, and 1, and a stem value of 4 with a leaf value of 0, 1, 9.

To find the interquartile range, you will list the data that is presented in the stem and leaf plot.

Find the median of the data (30.5)

Find the median of the lower half and the median of the upper half.

Subtract these two values.

The data are 20, 25, 30, 30, 31, 40, 41, 49.
                            27.5                40.5
40.5-27.5 = 13

The interquartile range is 13.