| nParam {miscTools} | R Documentation |
Number of model parameters
Description
This function returns the number of model parameters. The default
method returns the component x$param$nParam.
Usage
nParam(x, free=FALSE, ...)
## Default S3 method:
nParam(x, ...)
## S3 method for class 'lm'
nParam(x, ...)
Arguments
x |
a statistical model |
free |
logical, whether to report only the free parameters or the total number of parameters (default) |
... |
other arguments for methods |
Details
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.
Value
Number of parameters in the model
Author(s)
Ott Toomet, otoomet@econ.au.dk
See Also
nObs for number of observations
Examples
# 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
[Package miscTools version 0.6-28 Index]