Question

Which best describes the spread of a set of data that has an interquartile range of 12 and a mean absolute deviation of 8?

A.
The average distance of all data values from the mean is 12 and the middle 50% of data values has a range of 8.

B.
The average distance of all data values from the mean is 8 and the middle 50% of data values has a range of 12.

C.
The average distance of all data values from the mean is 10 and the middle 50% of data values has a range of 4.

Answer 1

D.
The average distance of all data values from the mean is 10 and the middle 50% of data values has a range of 20.
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@mathmate

Answer 2

srry got my own problems

Answer 3

same reasoning as @muscrat123

Answer 4

Do you know what interquartile range means?

Answer 5

i dont

Answer 6

This might help. Do you understand the attached image?

Answer 7

no really...

Answer 8

can u delete the comment w/ my username?

Answer 9

i did

Answer 10

So, a set of data may be separated into quartiles, each quartile containing 1/4 (or 25%) of the data (hence the name quartile). The interquartile range (IQR) is the range that contains the middle half (50%) of the data.

Answer 11

You're welcome.

Answer 12

do you know the answer?

Answer 13

Yes, I know the answer. What do you think? And please disregard my message - sent to wrong user by mistake. Sorry.

Answer 14

You know the definition of IQR. Apply that definition to this question and you'll have your answer.

Answer 15

What is the IQR in this question?