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what does it mean when you find the sum of a number and divide by the total ?

i have a math question.what does it mean when you find the sum of the numbers and divide by the total

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Todd M. | Reducing Anxiety in Math, English, Statistics, PsychologyReducing Anxiety in Math, English, Stati...
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Hi Regina,
 
This sounds like you're trying to find the average of a group of numbers. For instance, suppose you want to find the average age of a group of people whose ages are 16, 18, 23, and 28. First, you sum the numbers: 16 + 18 + 23 + 28. You get 85. Then you divide 85 (the sum) by how many numbers you added together (4). So you divide 85 by 4, which gives you 21.25. Hope this helps!
 
Todd M.