Need help sir/maam. I do have a data with age. N= 10 Age----Count 5------3 10-----2 15-----5 How to compute the averages of a count? (formula) Average shld be = 11
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5 + 5 + 5 (<--- 3 times) + 10 + 10 (<-- 2 times) + 15 + 15 + 15 + 15 + 15 (<-- 5 times) = 110 110/10 = 11
Is there any other way? I do have a large set of data (age) And I need a simple formula..
There might be... it's been a while since I've had to learn such things. Rather than having ___ + ___ + ___ + ___ + ... you could multiply (using your numbers) 5*3 + 10*2 + 15*5
A simpler way: $\displaystyle \frac{(5*3)+(10*2)+(15*5)}{(5+3+2)} = 11$
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