A) 0
B) 1.2
C) 5
D) 25
Correct Answer: B
Solution :
A.M. = \[\frac{3+4+5+6+7}{5}=5\] \ Mean deviation\[=\frac{\Sigma |{{x}_{i}}-\bar{x}|}{n}\] \[=\frac{|3-5|+|4-5|+|5-5|+|6-5|+|7-5|}{5}\] \[=\frac{2+1+0+1+2}{5}\]\[=\frac{6}{5}=1.2\].
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