[R] significance of character (Anova)

[peter dalgaard]

On Aug 10, 2012, at 15:47 , Jennifer Kaiser wrote:

> 
> Model: poisson, link: log
> 
> Response: sb_ek_ber
> 
> Terms added sequentially (first to last)
> 
> 
>           Df  Deviance Resid. Df Resid. Dev  Pr(>Chi)    
> NULL                     1237837 4.4998e+10              
> ABWHALT_C  2 244353722   1237835 4.4754e+10 < 2.2e-16 ***
> Wuerfel    5  63772679   1237830 4.4690e+10 < 2.2e-16 ***
> 
> Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 
> There were 50 or more warnings (use warnings() to see the first 50)
> 
> The thing is that the caracter "Wuerfel" is random generated  
> and it shouldn' t  be significant.
> 
> It would be realy great if you could help me. 


The most obvious guess is that sb_ek_ber probably is not Poisson distributed. 

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com