Let a, b, c, d, e, be the observations with m and standard deviation s. The standard deviation of the observations a+k, b+k, c+k, d+k, e+k is `s` (b) `k s` (c) `s+k` (d) `s/k`

Explanation

The given observations are `a,b,c,d,e`


Then, Mean= `(a+b+c+d+e)/5`


`=>sum x_i =(a+b+c+d+e)=5m.......(i)`


Standard deviation , `s =sqrt [(x_i)^2/5 -m^2]`


...