A) 10
B) 20.2
C) 5.05
D) 10.1
Correct Answer: D
Solution :
Mean is\[\frac{101+\frac{100\times 101}{2}}{101}=1+50d\]sum of deviation about mean is 50 d + 49d + ................... d + 0 + d + ........ + 50 d = 50. 51 d Mean deviation \[=\frac{50\times 51d}{101}=255\] \[d=\frac{255\times 101}{2550}=10.1\]You need to login to perform this action.
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