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Solved: A sample of 20 glass bottles of a particular type
Chapter 1, Problem 57E(choose chapter or problem)
Problem 57E
A sample of 20 glass bottles of a particular type was selected, and the internal pressure strength of each bottle was determined. Consider the following partial sample information:
a. Are there any outliers in the sample? Any extreme outliers?
b. Construct a boxplot that shows outliers, and comment on any interesting features.
Questions & Answers
QUESTION:
Problem 57E
A sample of 20 glass bottles of a particular type was selected, and the internal pressure strength of each bottle was determined. Consider the following partial sample information:
a. Are there any outliers in the sample? Any extreme outliers?
b. Construct a boxplot that shows outliers, and comment on any interesting features.
ANSWER:
Solution:
Step 1 of 3:
We have
Median = 202.2, lower quartile() = 196.0, and Upper quartile () = 216.8
We have the first three and last three observations.
125.8, 188.1, 193.7, 221.3, 230.5, and 250.2.