John scored 85 on Prof.Hardtack's exam (Q1 = 40 and Q3 = 60).Based on the fences,which is correct?
A)John is an extreme outlier.
B)John is an outlier.
C)John is not an outlier.
D)John is in the 85th percentile.

Question

Quizplus · Accepted Answer

To determine if John is an outlier, we need to use fences. The fences are calculated as follows:
lower fence = Q1 - 1.5(IQR) = 40 - 1.5(60-40) = -10
upper fence = Q3 + 1.5(IQR) = 60 + 1.5(60-40) = 110

Since John's score of 85 falls within the range of the fences (-10 to 110), he is not considered an outlier. Therefore, the correct choice is C. The fact that he is in the 85th percentile is irrelevant to determining whether or not he is an outlier.

John Scored 85 on Prof