Question

Calculate the interquartile range of the skewed dataset 0, 2, 6, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 10.(1 point)
The interquartile range=
.

Answer 1

First put the 15 values in order (already ordered). Median is the 8th value = 8.
Lower half (first 7 values): 0, 2, 6, 7, 7, 7, 8 → Q1 is the 4th value = 7.
Upper half (last 7 values): 8, 8, 8, 8, 9, 9, 9, 10 → Q3 is the 4th value = 9.
IQR = Q3 − Q1 = 9 − 7 = 2.