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how to calculate Standard deviation of product of numbers?
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Richard Buttrey
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how to calculate Standard deviation of product of numbers?
On Mon, 4 Jul 2005 03:51:03 -0700, "Mridull Putatunda" <Mridull
wrote:
There are 3 columns, A, B and C. Each column has 10 rows each containing
numbers. I need to find the standard deviation of the product of the numbers
in each row.
Eg:
a b c product
2 5 4 40
3 6 5 90
4 7 6 168
We need to find STDEV of the product column.
I need this without calculating the product separately just in one formula
which would give the stdev of the product.
=STDEV(D2:D11)
Assuming the '40' in the product column is in D2
Rgds
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Richard Buttrey
Grappenhall, Cheshire, UK
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