Long description
Month 
Actual Shed Sales 
3Month Weighted Moving Average 
January 
10 

February 
12 

March 
13 

April 
16 
Sum of the sales of the previous 3 months multiplied by the appropriate weights upon 3 equals sum of 3 times 13, 2 times 12, and 13 1 times 10 upon 6 equals 12.17 
May 
19 
Sum of the sales of the previous 3 months multiplied by the appropriate weights upon 3 equals sum of 3 times 16, 2 times 13, and 1 times 12 upon 6 equals 14.33 
June 
23 
Sum of the sales of the previous 3 months multiplied by the appropriate weights upon 3 equals sum of 3 times 19, 2 times 16, and 1 times 13 upon 6 equals 17 
July 
26 
Sum of the sales of the previous 3 months multiplied by the appropriate weights upon 3 equals sum of 3 times 23, 2 ... 
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