Bunuel wrote:

Bunuel wrote:

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 least?

A. Town A

B. Town B

C. Town C

D. Town D

E. Cannot be determined.

Attachment:

2017-01-12_1108.png

BUMP................................

Town having least deviation from its mean position has the least SD

Town A= 217-95 = 122

Town B=156-99 =57

Town C= 204-148 =56

Town D=220-35 = 185

Since town C has less deviation it has least SD

Ans C