[" 14If for distribution "sum(x-5)=3],[sum(x-5)^(2)=43" and total number of items is "],[18" .Find then mean and standard deviation."]

If for a distribution sum(x-5) = 3, sum(x - 5)^2 = 43 and the total number of item is 18, find the mean and standard deviation.

If for a distribution, sum (x-5)=3, sum (x-5)^(2)=43 and total number of observations is 18, find the mean and standard deviation.

If for distribution sum(x-7)=3 , sum(x-7)^(2)=57 and total number of item is 20 . Find the mean and standard deviation.

If for a distribution sum(x-5)=3,sum(x-5)^(2)=43 and the total number of terms is 18 then mean and variance are

If for a distribution sum(x-7)=6 and sum(x-7)^(2)=78 and the total number of items is 12 then mean and standard deviation are (i) barx=7.5,sigma=2.5 (ii) barx=7,sigma=2.5 (iii) barx=7.5,sigma=2 (iv) barx=7,sigma=2

If for distribution of 18 observations sum(x_(i)-5)=3 and sum(x_(i)-5)^(2)=43, find the mean and standard deviation.

If for distribution of 18 observations sum(x_i-5)=3a n dsum(x_i-5)^2=43 , find the mean and standard deviation.

If for distribution of 18 observations sum(x_i-5)=3a n dsum(x_i-5)^2=43 , find the mean and standard deviation.

The sum of 10 items is 12 and sum of their squares is 18, then standard deviaiton is

The sum of 10 items is 12 and sum of their squares is 18, then standard deviaiton is