Displaying 3 results from an estimated 3 matches for "stat501".
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stat500
2011 Mar 20
3
manova question
Dear friends,
Sorry for this somewhat generically titled posting but I had a question
with using contrasts in a manova context. So here is my question:
Suppose I am interested in doing inference on \beta in the case of the
model given by:
Y = X %*% \beta + e
where Y is a n x p matrix of observations, X is a n x m design matrix,
\beta is m x p matrix of parameters, and e is a
2012 Mar 19
1
car/MANOVA question
Dear colleagues,
I had a question wrt the car package. How do I evaluate whether a
simpler multivariate regression model is adequate?
For instance, I do the following:
ami <- read.table(file =
"http://www.public.iastate.edu/~maitra/stat501/datasets/amitriptyline.dat",
col.names=c("TCAD", "drug", "gender", "antidepressant","PR", "dBP",
"QRS"))
ami$gender <- as.factor(ami$gender)
ami$TCAD <- ami$TCAD/1000
ami$drug <- ami$drug/1000
library(car)
fit.l...
2013 Sep 10
2
Normalidad para datos multivariados
Hola! Estoy teniendo un problema para testar la normalidad y la homogeneidad de varianzas para mi modelo de manova
Es este mi modelo: m1<-manova(cbind(pred,fit,oniv)~tratamento/parcela+bloco,data.vegetacao)
Aparte de tener tres variables respuestas (predador, fitófago, omnívoro), también es un diseño anidado.
Alguien sabría responder esto? Gracias!
Carol
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