Enter the mean of the first group and the mean of the second group into the calculator to determine the Difference of Means. This calculator can also evaluate any of the variables given the others are known.

## Difference Of Means Formula

The following formula is used to calculate the Difference of Means.

DM = M1 - M2

Variables:

- DM is the Difference of Means
- M1 is the mean (average) of the first group
- M2 is the mean (average) of the second group

To calculate the Difference of Means, subtract the mean of the second group from the mean of the first group. This will give you the average difference between the two groups. This method is used to determine if there is a significant difference between the averages of two different groups.

## What is a Difference Of Means?

A Difference of Means, also known as a mean difference or average difference, is a statistical method used to compare the averages of two different groups to determine if they are significantly different from each other. It is calculated by subtracting the mean (average) of one group from the mean of the other group. This method is commonly used in experiments and observational studies to test hypotheses and draw conclusions about the populations from which the groups are sampled.

## How to Calculate the Difference Of Means?

The following steps outline how to calculate the Difference of Means (DM).

- First, determine the mean (average) of the first group (M1).
- Next, determine the mean (average) of the second group (M2).
- Next, gather the formula from above = DM = M1 – M2.
- Finally, calculate the Difference of Means (DM).
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

Mean (average) of the first group (M1) = 10

Mean (average) of the second group (M2) = 7