Name________________________

CALCULATING THE MEAN #1--KEY

Directions: Calculate the mean for each set of numbers below.  To find the mean of a set of numbers, add all of the data together, then divide that sum by the amount of numbers in the set.

Example:  Here are the numbers in the set (2, 2, 8, 10, 8)

Add them together              2 + 2 + 8 + 10 + 8 = a total of 30

Divide by the amount of numbers in the set             30 divided by 5 gives you a mean of 6

SUM                           DIVIDED BY                                    MEAN

1)         (2, 4, 6, 8)                                          __20___                                  _4_                                ___5___

2)         (2, 1, 4, 6, 1, 4)                                  __18___                                  _6_                                ___3___

3)         (12, 8, 10,)                                         __30___                                  _3_                                __10___

4)         (6, 2, 5, 7, 5)                                      __25___                                  _5_                                ___5___

5)         (1, 2, 4, 6, 1, 6, 1)                               __21___                                 _7_                                ___3___

6)         (12, 4, 6, 10)                                       __32___                                 _4_                                ___8___

7)         (2, 10, 4, 6, 10, 4)                              __36___                                  _6_                                ___6___

8)         (9, 8, 10)                                            __27___                                  _3_                                ___9___

9)         (6, 8, 5, 11, 5)                                    __35___                                  _5_                                ___7___

10)       (5, 1, 4, 6, 1, 2, 2)                               __21___                                 _7__                              ___3___