This is a great question. In the file linked below, I illustrate the Central Limit Theorem. This involved drawing samples of a given size, finding the mean for each sample, followed by creating the distributions of the means for the samples. Since I used canned data, I already know the population mean, but you can find that by sampling, without replacement, using the n value for your population. It looks like I ran the sampler twice for n=75, but you get the idea.
https://codap.concord.org/app/#shared=130461
Note that the sampler appears to have lost the collection of 200 salary’s. I have found the program to be a little buggy in these types of problems and I don’t have time to play with it this morning.
If you have any questions, I have other sample files available. Also, please let me know if this is not helpful.
Kathy