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___