[R] help in fitted values in lm function

[Petr PIKAL]

Hi

> 
> Hi,
> 
> I have a data set of 10000 rows and ran a linear regression by using the
> function lmres = lm(formula,data)
> 
> then got the fitted value by using the value fit=fitted(lmres).
> 
> but the number of rows in the fitted one is about 9548,
> 
> What could be the reason for reduction in the number of rows in the 
fitted
> one 

Some NA values in your data?

Petr

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