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Conrad Carlberg
 
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The description of your problem is a little terse. First, do you mean a
regression equation with multiple predictor variables? Then, functions such
as LINEST might be appropriate. Or second, with multiple outcome variables?
In that case, you'll have to code your own Householder macro, although the
Householder/Ortega/Wilkinson code (which rips, BTW) in VBA is
Web-available -- at least, it used to be. And third, it's not clear what you
mean by "without using array."

C^2
Conrad Carlberg

Excel Sales Forecasting for Dummies, Wiley, 2005

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