[R] output on glm.nb

[Ronaldo Reis Jr.]

Hi,
I make a model and have compared with null model.

anova(mnull,m1)

	Model theta Resid. df 2xlog-lik   test   df   LR stat.  Pr(chi)
1	...   0.39    161     -577.9129          NA   NA        NA
2	...   1.30    150     -475.6839  1 vs 2  11   102.229   1.11e10-16

anova(m1)

	Df  Deviance   Resid. Df   Resid. Dev   P(>|chi|)
NULL                      161         282.139    9...
...     ...    ...        ...           ...       ...
last    2    8.824        150         138.154     ...

My doubt is:

What is my null deviance? 577.9129 or 282.139?

What is 2xlog-lik?

Thanks
Ronaldo
-- 
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