Listed below are measured amounts of caffeine (mg per 12oz ofdrink) obtained in one can from each of 14 brands. Find the range, variance, and standard deviation for the given sample data. Include appropriate units in the results. Are the statistics representative of the population of all cans of the same 14 brands consumed?

0,0,0,30,32,37,38,39,41,47,48,50,53,53