[R] testing the fit of a regression and comparing regressn models

[DispersionMap]

I got the usual regression output from a model i did in R.

Im looking for alternative test criteria that can be done in R which are not
in the standard lm output.

I need to:

a) asses the fit of a logistic regression model and of a linear regression
model

b) compare the fit of models against each other

c) Does r do things like...
Spearman’s rank
Cooks distance
Deviance
BIC
Elbow/Scree plot

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