Use a Trendline Formula to Get Values for Any Given X with Excel

Posted by kirkouimet on Super User See other posts from Super User or by kirkouimet
Published on 2011-03-08T22:29:10Z Indexed on 2011/03/09 0:13 UTC
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microsoft-excel

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math

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excel-formula

Is there an easy way to apply the trend line formula from a chart to any given X value in Excel?

For example, I want to get the Y value for a given X = $2,006.00. I've already taken the formula and retyped it out be:

=-0.000000000008*X^3 - 0.00000001*X^2 + 0.0003*X - 0.0029

I am continually making adjustments to the trend line by adding more data, and don't want to retype out the formula every time.

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