Question

Baseball pitchers on a major league team throw at the following speeds (in miles per hour): 72, 84, 89, 81, 93, 100, 90, 88, 80, 84, and 87. Determine whether the extreme value is an outlier.

Answer 1

100>90+1.5(9)

100>90+13.5

100>103.5

100 is not an outlier

Explanation:

72<Q1-1.5(IQR)

72<81-1.5(9)

72<81-13.5

72<67.5

72 is not an outlier