The heights in inches of the 14 players listed on the Chicago Bulls roster for the 2013-14 season are shown below (NBA.com). Find the value of Q3. 81, 79, 77, 81, 81, 81, 76, 82, 82, 82, 83, 75, 79, 74.

You calculated the standard deviation for data set to be 2.4894, but you used the formula for a population. There were 13 data points in the set. Your professor now makes you aware that the data set was a sample and not a population and wants you to correct your answer. Re-Calculate the standard deviation for the sample.