Concept explainers
The comparison between the arithmetic mean and the trimmed mean.
The use of calculating the trimmed mean.
Answer to Problem 38E
There is very slight difference between both the means.
Trimmed mean is useful to calculate because it minimizes the effects of extreme scores possibly caused by biasness.
Explanation of Solution
The ordered data set is:
The mean of the data set will be:
Remove 10% of lowest and highest data values:
The trimmed mean will be:
There is very slight difference between both the means.
Trimmed mean is useful to calculate because it minimizes the effects of extreme scores possibly caused by biasness.
Chapter 7 Solutions
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