Question

Mr. Daten gave his class a 20-point quiz. The results of that quiz are shown below.

On the number line below, select the numbers that represent the first, second, and third quartiles of the quiz scores.

Answer 1

First Quartile:

11

Second Quartile:

14

Third Quartile:

18

Explanation:

Study Island

Answer 2

To evaluate the data set shown we need to rearrange the sets from smallest to the largest
5,7,10,10,12,12,12,13,15,17,18,18,18,19,20,20
thus the:
first quarter, Q1 will be:
(10+7)/2
17/2
=8.5

second, Median
(13+15)/2
=28/2
=14

Third quarter, Q3:
(19+20)/2
=39/2
=19.5

Thus you can use the values obtained to mark the number line.