Compare data sets using center and spread measures appropriate to distribution shape.
Find the mean of two data sets and compare the means
Problem
Find the mean of each data set, then compare them: data set \(A~=~4,~6,~8\); data set \(B~=~5,~5,~11\).
Big Picture
What this problem is really about
Compute each mean independently as that set’s total divided by its own observation count; comparing raw totals can be misleading, especially when sample sizes differ. Once both centers are in the same units, compare their order and subtract them in that order to describe the size of the difference.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
