Many ways... but they all assume you know the background theory, which you
don't seem to, and which is off-topic here.
Consider reading some help files:
?summary.lm
?plot.lm
Re: regression not existing... the classic case is when your data fit your
model too perfectly... regression must have some nonzero error in your
data to work. (That is a bonus bit of theory to get you started.)
In most real-world cases, you are more likely to encounter a situation
where your proposed regression model is simply inappropriate for your
data, and the regression algorithm plows along successfully computing
garbage.
On Tue, 3 Feb 2015, TMF wrote:
as the title says (from an R begginer). Is it also possible that regression,
in a given data's case, just doesn't exist -- for any type of applied
regression modelling?
Thanks!
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