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if the mean of a set of 12 numbers is 13 what is the sum

Guest Mar 30, 2017
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Let the sum of the set of numbers  = S

 

So....the mean would be calcuated as the sum of the set divided by its number of entries, or :

 

S / 12  = 13     ....... multiply both sides by 12

 

S  = 13 * 12   =  156  .....so.....the sum is 156

 

 

 

cool cool cool

CPhill  Mar 30, 2017

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