The mean of `n` observations is `xdot` If `k` is added to each observation, then the new mean is ` X ` (b) ` X +k` (c) ` X -k` (d) `k X `

Explanation

Given:

Mean `= (x1 + x2 + ...+ n terms)/N`

`=> (x1 + k + x2 + k +...+n terms)/N`

`=> Mean + k`

`=>X + k`

option (b) is correct answer