From: Elisabetta Petracci <elisabetta.petracci_at_unimi.it>

Date: Wed, 23 Jan 2008 13:18:50 +0100

R-help_at_r-project.org mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Wed 23 Jan 2008 - 12:19:22 GMT

Date: Wed, 23 Jan 2008 13:18:50 +0100

Hello,

I'm quite new with R and so I would like to know if there is a command
to calculate an integral.

In particular I simulated a bivariate normal distribution using these
simple lines:

rbivnorm <- function(n, # sample size

mux, # expected value of x muy, # expected value of Y sigmax, # standard deviation of X sigmay, # standard deviation of Y rho){ # correlation coefficient x <- rnorm(n,mux,sigmax) y <- rnorm(n,muy+rho*sigmay*(x-mux)/sigmax, sigmay*sqrt(1-rho2)) cbind(x,y) }

In this way I've sampled from a normal bivariate distribution and I've obtained two vectors of values:x and y..

Now, I would like to find the marginal distribution of y from the
bivariate distribution.

Is there a command to do this?

Thank you,

Elisabetta

R-help_at_r-project.org mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Wed 23 Jan 2008 - 12:19:22 GMT

Archive maintained by Robert King, hosted by
the discipline of
statistics at the
University of Newcastle,
Australia.

Archive generated by hypermail 2.2.0, at Wed 23 Jan 2008 - 19:30:18 GMT.

*
Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help.
Please read the posting
guide before posting to the list.
*