Question 1036440
Add them up and divide by the number in the sample:  162/10=16.2
Take the difference of each value from the mean and square it.  Add all the squares and divide by 9, one less than the number in the sample, because it is a sample and not a population.  That is the variance:15.45
Take the square root of the variance.  That is the standard deviation: 3.29
Take the difference between the highest and the lowest.  That is the range: 11.