SEM of 3 independent experiments

Hi all... It's my first time to post in this forum.

I would like to calculate the standard error of mean (SEM) of 3 independent experiments.

For each set of experiment, the data are from 31 samples. So i have a mean, SD and SEM for each of the experiment.

So, my question is, how to calculate the mean, SD and SEM of these 3 sets of independent experiments?

Hey Matthewhk.

Have you got three separate distributions for each experiment? If so just apply the formulae for each distribution that corresponds to a unique experiment.