What is the third quartile of this data set?

21, 24, 25, 28, 29, 35, 37, 39, 42
A. 38
B. 25
C. 29
D. 24.5

Question

What is the third quartile of this data set?

21, 24, 25, 28, 29, 35, 37, 39, 42
 		A.	38
 		B.	25
 		C.	29
 		D.	24.5

tkhunny · Answer

What is the median?

ambermarie151 · Answer

29 ? @tkhunny

tkhunny · Answer

Good.  Now, ignore everything below 29 and answer the same question.  What is the median?

ambermarie151 · Answer

37?

tkhunny · Answer

You just found the third quartile - the median of everything from the median, up.

ambermarie151 · Answer

But there is no 37 so would it be 38 ?

tkhunny · Answer

Whats the definition of a quartile?

tkhunny · Answer

Personally, I disagree with anything by 37.  If you have a working definition that suggests it should be something other than that, please use that definition so you get it right on your exam.