Question

Consider the following data set:
3.3, 9.3, 4.6, 2.5, 10, 8, 7.6
Work out the IQR:

Answer 1

6

Explanation:

3.3, 9.3, 4.6, 2.5, 10, 8, 7.6

Sort the data

2.5, 3.3, 4.6, 7.6, 8, 9.3, 10

Q1: 3.3

Q3: 9.3

IQR = 9.3 - 3.3

= 6

Answer 2

6.

Explanation:

Arrange in ascending order:

2.5, 3.3, 4.6, 7.6, 8, 9.3, 10

The median is 7.6.

The lower quartile is 3.3 and the upper id 9.3 so:

the IQR = 9.3 - 3.3 = 6.