sandy wrote:

The table above shows the frequency distribution of the heights of 80 students. What is the least possible range of the heights of the 80 students?

A. 15

B. 16

C. 20

D. 24

E. 28

Practice Questions

Question: 12

Page: 151

We need only consider the minimum and maximum ranges

6 students in the 140 - 144 cm category: So, it's possible that all 6 measurements are

144, 144, 144, 144, 144, 144 4 students in the 160 - 164 cm category: So, it's possible that all 4 measurements are

160, 160, 160, 160So, it's possible that all 80 measurements are: {

144, 144, 144, 144, 144, 144 , 146, 146, ......, 158, 158,

160, 160, 160, 160}

RANGE =

160 -

144 = 16

Answer: B

Cheers,

Brent

_________________

Brent Hanneson – Creator of greenlighttestprep.com

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