Question

sum of deviation of 10 values from x=50,is 500 what will be A.M ??

Answer 1

Answer:

Given, ∑(x−

x

ˉ

)

2

=250,n=10,

x

ˉ

=50

Thus standard deviation =

n

∑(x−

x

ˉ

)

2

=

25

=5

∴ Coefficient of variation =

x

ˉ

σ

×100=

50

5

×100 % =10%