If the 5-number summary is 3, 7, 10, 11, 15, the IQR is 11-7=4.  1.5IQR = 1.5*4 = 6 Lower fence = Q1-1.5IQR = 7-6 = 1, so values less than 1 and values greater than the upper fence are considered as outliers.  What is the upper fence? Upper fence = Q3+1.5IQR =

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 6E
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If the 5-number summary is 3, 7, 10, 11, 15, the IQR is 11-7=4. 

1.5IQR = 1.5*4 = 6

Lower fence = Q1-1.5IQR = 7-6 = 1, so values less than 1 and values greater than the upper fence are considered as outliers.  What is the upper fence?

Upper fence = Q3+1.5IQR = ?

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