[R] r question

[Peter Dalgaard]

Uwe Ligges <ligges at statistik.uni-dortmund.de> writes:

> Please,
> 
> 1. read the posting guide
> 2. use a sensible subject line
> 3. this is NOT an "r question"
> 4. ask your teacher to explain your homeworks, but not this list
> 
> Uwe Ligges

And, btw, neither the mean nor the variance exists, so the question is
incomplete, and any answer approximate.
 
> 
> 
> yuying shi wrote:
> 
> > If there are two random variable X1 and X2 which have
> > a bivariate normal distribution with mean vector (10,
> > 10)and variance covariance matrix 
> > [2    1.95
> >  1.95    3]
> > 
> > How to calculate the mean and variance of the function
> > Y=X1/X2? 
> > 
> > Thanks a lot!
> > xingyu
> > 
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
> 

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907