The following table gives the frequency distribution of the number of errors committed by a college baseball team in all of the 45 games that it played during the 2011–12 season.

Number of Errors	Number of Games
0	11
1	14
2	9
3	7
4	3
5	1

Find the mean, variance, and standard deviation. (Hint: The classes in this example are single valued. These values of classes will be used as values of m in the formulas for the mean, variance, and standard deviation.)