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GMAT Problem Solving (PS) | Re: The chart above represents the number of students at five schools, eac

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Bunuel wrote:

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The chart above represents the number of students at five schools, each of which has branches in each of four towns. In which town is the standard deviation of the number of students at each school the greatest?

A. Town A
B. Town B
C. Town C
D. Town D
E. It cannot be determined from the information given.


Standard Deviation is Maximum when the terms in the set are widely separated.
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