Question

What is the inerquartile of the data set [40,48,62,40,25,50,20 30

Answer 1

Hello!

To find the interquartile you first have to find the median

20, 25, 30, 40, 40, 48, 50, 62

The median is 40

To find quartile 1 you find the median of the numbers less than 40

20, 25, 30

Quartile 1 - 25

To find quartile 3 you find the median of the numbers higher than 40

48, 50, 62

Quartile 3 - 50

The answers are
Quartile 1 - 25
Quartile 3 - 50

Hope this helps!

Answer 2

You just find the quartiles which are 62 and 50 the mines them which equals 12.