Hello Andrew,
There are some parameters associated with the o/p of arima(),
In your case fit.
If one search for help(arima) ,
Values like sigma2,var.coef,loglik, aic will give you some information
regarding how good the model is.
If you want to overlay the output, you have to produce the output an
hi,
i am trying to teach myself about ARIMA models. i have followed examples
from a number of sources and have more or less got the hang of how it
works. i would like to compare the output from the fitted model to the
original data. is this possible? or even a meaningful thing to do?
to be clear,
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