Posted by **Nancy** on Thursday, December 31, 2009 at 7:35pm.

I am trying to work a case problem, I have to take a group of numbers and using the data by product line, there is three different products lines, I need to compile a breakdown of sales by product then give a total of all three. then I need to find the expected sales for each product if the total of all 3 is equal to 100,000 total units. Can you give me some advice on where to start?

thanks

Nancy

- Statistics -
**drwls**, Friday, January 1, 2010 at 6:38am
This does not look like statistics. It looks like extrapolation.

Assume the sales breakdown gives you sales of S1, S2 and S3, with a total T = S1 + S2 + S3.

If you sold 100,000, the new sales amounts of each product would be

S1' = S1*(100,000/T)

S2' = S2*(100,000/T)

S3' = S3*(100,000/T)

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