nObs | R Documentation |

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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