Return number of observations for statistical models
Returns number of observations for statistical models. The default
method assumes presence of a component param$nObs in x.
nObs(x, ...) ## Default S3 method: nObs(x, ...) ## S3 method for class 'lm' nObs(x, ...)
x |
a statistical model, such as created by |
... |
further arguments for methods |
This is a generic function. The default method returns the component
x$param$nObs. The lm-method is based on
qr-decomposition, in the same way as the does summary.lm.
numeric, number of observations
Ott Toomet, otoomet@econ.au.dk
# 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 nObs(m)
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