CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
Find the mean of 4, 7, 8, 9, 10, 12, 13, 17
N = 8∴
N = 8Let assumed mean, A be 160∴ d = x - A = 8, 2, 11, -7, -1, 5, -2, 4 ∴