Number of model parameters
This function returns the number of model parameters. The default
method returns the component x$param$nParam.
nParam(x, free=FALSE, ...) ## Default S3 method: nParam(x, ...) ## S3 method for class 'lm' nParam(x, ...)
x |
a statistical model |
free |
logical, whether to report only the free parameters or the total number of parameters (default) |
... |
other arguments for methods |
Free parameters are the parameters with no equality restrictions. Some parameters may be restricted (e.g. sum of two probabilities may be restricted to equal unity). In this case the total number of parameters may depend on the normalisation.
Number of parameters in the model
Ott Toomet, otoomet@econ.au.dk
nObs for number of observations
# Construct a simple OLS regression: x1 <- runif(100) x2 <- runif(100) y <- 3 + 4*x1 + 5*x2 + rnorm(100) m <- lm(y~x1+x2) # estimate it summary(m) nParam(m) # you get 3
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