Hi all,

Could you please point me to good materials on various
tricks/intuitions/techniques of regression, and hopefully in R?

For example, what does lm(y~ x * w - 1) mean vs. lm(y ~ x/w -1 ) vs. lm (y
~ x:w-1), etc...

I just found that even simple linear regression is not that simple and
there are a lot of tricks/techniques in using them...

Hopefully I can find good materials on these!

Thank you!

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