multi-regression help

#1
Hello,

I'm working through a dummy multi-regression example and I think I'm good with the calculations part.

I'm confused on the Revenue (Y) Prediction part. Can I change the both variables at the same time to make the Revenue prediction? Or do I need to hold one independent variable as constant?

Any information would be greatly appreciated.

Thanks,

Tim


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obh

Active Member
#2
I thought that advertising is part of marketing?
Is the attached your real data? what is the sample size?

Yes you can change both variables at the same time, why not?