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Maths-

SAT

Easy

Question

Which statement best compares the means of the two data sets shown?

The mean of data set A is greater than the mean of data set B.
The mean of data set A is equal to the mean of data set B.
The mean of data set A is less than the mean of data set B.
There is not enough information to compare the means.

The correct answer is: The mean of data set A is greater than the mean of data set B.

Data set A & B are similar except for the fact that data set A has an abnormally large value with respect to rest of the observations. Therefore, the mean has to rise relatively if we compare the actual means, A will have a larger mean than data set B. Hence A.

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