# Calculating the Mean Difference

Please show me how you would approach calculating the following, I don't understand what MD is.

Calculate the difference in scores and find the MD for the following data from a repeated-measures study.

Subject Treatment 1 Treatment 2

A 34 44

B 41 39

C 30 45

D 21 30

https://brainmass.com/statistics/quantative-analysis-of-data/calculating-mean-difference-506791

#### Solution Preview

Solution. We take a difference by using the second score - first score. So,

Subject Treatment 1 Treatment 2 ...

#### Solution Summary

This solution helps calculate mean difference.

$2.19