# Return number of observations for statistical models

### Description

Returns number of observations for statistical models. The default
method assumes presence of a component `param$nObs`

in `x`

.

### Usage

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### Arguments

`x` |
a statistical model, such as created by |

`...` |
further arguments for methods |

### Details

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`

.

### Value

numeric, number of observations

### Author(s)

Ott Toomet, otoomet@econ.au.dk

### See Also

`nParam`

### Examples

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