The test scores on a science quiz were: 50 50 63 71 74 74 75 77 78 80 85 99. This is a population! ALL QUIZ GRADES! Determine the mean (round to the nearest whole number) and standard deviation (Round...

The test scores on a science quiz were:  50  50  63  71  74  74  75  77  78  80  85  99.

This is a population! ALL QUIZ GRADES!

Determine the mean (round to the nearest whole number) and standard deviation (Round to the hundredth place- two decimals).

The mean is?     and the deviation is ?