Question

Where is the 1st quartile in this data set?

36, 27, 15, 22, 33, 28, 43, 12, 33, 17

Answer 1

First arrange the data in ascending order. Can you do that?

Answer 2

12,15,17,22,27,28,33,33,36,43 ?

Answer 3

Good work! Note that there are 10 values in the set. Split the 10 values into two sub-sets with 5 elements in each. The first sub-set is {12, 15, 17, 22,27}. The first quartile is the median of this sub-set. Can you find it ?

Answer 4

The median of the sub-set is the middle element.

Answer 5

17

Answer 6

Good work. The first quartile of the data set is 17.