The mean deviation or absolute deviation is calculated by the summation of the difference of each value from mean. The formula used by the calculations of MAD is as follows: $$ MAD = Σ|xi – m| / n $$. Where, xi are the individual

You'll then get the MAD of 4: How to Manually Derive the MAD. You may use the following formula to derive the MAD: Σ│xi - x̅│ MAD = n Where: x̅ = Average of all data points; xi = Value of each

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