# Mean Deviation for Grouped Data

Mean Deviation for Grouped Data Mean Deviation about the Mean: Recall the arithmetic mean (x̄) of a discrete frequency distribution with n data points is obtained using the formula: x̄ = (ⁿ∑i=₁ xi fi)/ ⁿ∑i=₁ fi = (ⁿ∑i=₁ xi fi)/ N. Where, N = ⁿ∑i=₁ fi Now the mean deviation about the mean i.e., M.D Read more about Mean Deviation for Grouped Data[…]