Question

What is the interquartile range of the data ?

100, 120, 130, 188, 196, 220, 265, 300

a ( 200
b ( 242.5
c ( 145
d ( 117.5

Answer 1

Answer: The answer is D

Step-by-step explanation: I took the test, and this was the answer D was the answer it said was correct.

Hope I helped!

Answer 2

First, find the middle of the data and you get 4 numbers in each side, then find the median for both group: 100,120,130,188 and for 196,220,265,300, for the group 1 that median is Q1 and for the second the median is Q3, now the interquartile range is=Q3-Q1
so,Q1=(120+130)/2=125
Q3=(220+265)/2=242.5
IQR=Q3-Q1=242.5-125=117.5