[R] will 9 data points work for a regression in R?

Uwe Ligges ligges at statistik.tu-dortmund.de
Wed Oct 3 20:07:22 CEST 2012

On 03.10.2012 19:58, liang.che at us.pwc.com wrote:
> See error message below:  can someone please help with this?  Thanks!
> Residuals:
> ALL 9 residuals are 0: no residual degrees of freedom!
> Residual standard error: NaN on 0 degrees of freedom
> Multiple R-squared:     1,      Adjusted R-squared:   NaN
> F-statistic:   NaN on 8 and 0 DF,  p-value: NA

Are these homeworks?

You have more variables then observations, i.e. no degrees of freedom left!

Uwe Ligges

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