Learn How to Calculate the Means Difference - Tutorial

Calculate Means Difference - Tutorial with Definition, Formula Example

Definition

The mean difference is a measure of statistical dispersion equal to the average absolute difference of two independent values drawn from a probability distribution.

Formula:

Mean Differene(∑ x1 / n) - (∑ x2 / n)
Where

x1 - Mean of group one x2 - Mean of group two n - Sample size

Example:

There are 2 Group of data which are listed below. Find the mean difference between these groups.

Group1 3 2 7 6
Group2 5 3 9 2
Solution:

Mean Differene = (∑ X1 / n) - (∑ X2 / n) ∑ X1 = 3+4+7+6 = 20 ∑ X2 = 5+3+9+2 = 19 m1 =∑ X1 / n = 20 / 4 = 5 m2 =∑ X2 / n = 19 / 4 = 4.75 Mean Differene = 5 - 4.75 = 0.25

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