[R] multiple comparison of interaction of ANCOVA

[Jinsong Zhao]

On 2011-12-11 22:49, Bert Gunter wrote:
> Inline below.
> -- Bert
>
> Graph the data sensibly to figure out what's going on. Statistical
> machinationsand anova tables with P values alone are not sufficient
> and can be opaque or misleading.
>
> If you do not know what "sensibly" is (or even if you do), consult:
> http://addictedtor.free.fr/graphiques/
>
> Cheers,
> Bert
>

Thank you very much for your suggestions. Is "sensible" plot that could 
give intuitionistic information?

Regards,
Jinsong