I need help finding the answer to below questions, can you please explain step by step. Thank you!

http://onlinestatbook.com/stat_sim/sampling_dist/index.html

5.You may use the following statistics here:

Mean,Median, Variance, Standard deviation

Mean absolute value of the deviation from the mean, Range

What is a statistic?Examine one or more of the above statistics and determine if they do or do not also tend toward a normal distribution for large enough sample size and a large enough number of samplesAgain, you may check the box for the 'Fit to Normal' to compare to a normal distribution