Mean Difference / Difference in Means (MD)

Sample Mean: Symbol (X Bar), Definition, Standard Error

SOLVED: What is meant by 'the difference of the means" when talking about an independent samples t-test? How does it differ from the 'mean of the differences" in a repeated measures t-test?Subtract one sub-group mean from the other sub-group mean,, resulting in a new set of difference scores for all the pairs:Subtract the raw scores for each pair of scores, resulting in one difference of the means for the dataset:Subtract the raw scores for each pair of scores; resulting in a new set of differen