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dowload
2012 May 01
2
Hypothesis Testing using Wald Criterion for two regression models with dummy variables
.... I have tried to
run an anova with test of Chisq, but I am not sure what the results are
telling. In addition, I used the rms package with a lrm model in an anova
test, again I am not sure what the results are telling me:
Try 1
anova(H,Ha,test="Chi")
Analysis of Variance Table
Model 1: logload ~ logflow
Model 2: logload ~ dummy + logflow
Res.Df RSS Df Sum of Sq Pr(>Chi)
1 17 4.6742
2 16 2.6314 1 2.0428 0.0004245 ***
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Signif. codes: 0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1
Try 2:
fit<-lrm(logload~logflow+dummy)
> anova(...