Kindly help with these

StatCrunchDataset: https://www.statcrunch.com/app/?dataurl=http%3A%2F%2Fwww.statcrunch.com%2Fbooks%2FCQL%2Fdataset%2FClass_Size.txt&dlim=tab&ft=true

Select the first 20 locations listed and find the mean and standard deviation for each of columns 2-5.

1. Consider this sample #1. Take the next 20 and do the same.
2. repeat this through the entire dataset. You will have 15 samples. Compare and write up findings of the 30 samples.
3. Next, calculate the mean and standard deviation of the 15 sample means and standard deviations.
4. How does this relate to the Central Limit Theorem?
5. Kindly write up about the findings and include all of the means and standard deviations.