Question

For each of 7 weeks babysitting, Kelly made the following dollar amounts:

16, 28, 28, 32, 21, 18, 35

What is the first quartile of this data?

a
35
b
28
c
32
d
16
e
18

Answer 1

28

Explanation:

in order to find first quartile find median:

median =32

since there are 6 data points lets split the data set into 2 groups of 3 data points each

the median of the first group is the first quartile and the median of the second group is the third quartile

group 1: 16 28 28

median=28

1st quartile=28