Displaying 2 results from an estimated 2 matches for "deltar".
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2011 Apr 07
1
Automated Fixed Order Stepwise Regression Function
...])," ", " ", " ")
anova.table<-rbind(anova.table,Total)
R1<-summary(mod1)[[8]][[1]]
R2<-summary(mod2)[[8]][[1]]
R3<-summary(mod3)[[8]][[1]]
R4<-summary(mod4)[[8]][[1]]
#Comment 7--SAME AS COMMENT 2. How do I make
#...[R] add R5, R6...Rn as necessary?
deltaR.1<-R1
deltaR.2<-R2-R1
deltaR.3<-R3-R2
deltaR.4<-R4-R3
#Comment 8--SAME AS COMMENT 7. How would I aoutomate this process?
Delta.R.Squared<-c(deltaR.1,deltaR.2,deltaR.3,deltaR.4," ","")
#Comment 9--I need a way to add as many deltaR's as
#...necessary(n of R...
2013 May 03
1
R package for bootstrapping (comparing two quadratic regression models)
Hello ,
I want to compare two quadratic regression models with non-parametric
bootstrap.
However, I do not know which R package can serve the purpose,
such as boot, rms, or bootstrap, DeltaR.
Please kindly advise and thank you.
Elaine
The two quadratic regression models are
y1=a1x^2+b1x+c1
y1= observed migration distance of butterflies()
y2=a2x^2+b2x+c2
y2= predicted migration distance of butterflies (based on body mass)
x= body mass of butterflies
null hypothesis: a1=a2 and b...