Question

What is the third quartile (Q3) of the data set?

157, 77, 97, 97, 144, 136, 132, 152, 72

A.
157
B.
148
C.
132
D.
87

Answer 1

how many data elements are in the set?

Answer 2

@Reaper534

Answer 3

@amistre64 theres 9 elements

Answer 4

then a quartile is a positional value ... 1q is equal to the number of elements, divided by 4

3q is simply 3 of those qs.

Answer 5

so tell me, what is 3*9/4?

Answer 6

6.75 @amistre64

Answer 7

good, now since thats bigger than 6, we want the 7th positional value.

after you sort the data, Q3 will be the 7th number in the list

Answer 8

157 @amistre64

Answer 9

157 is the biggest number in the list ... so im going to say that would be the 9th value .. not the 7th

Answer 10

so its 144