Re: [R] estimation problem

2012-05-05 Thread David Winsemius
On May 4, 2012, at 4:22 PM, Petr Savicky wrote: On Fri, May 04, 2012 at 07:43:32PM +0200, Kehl Dániel wrote: Dear Petr, thank you for your input. I tried to experiment with (probably somewhat biased) truncated means like in the following code. How I got the 225 as a truncation limit is a good

Re: [R] estimation problem

2012-05-04 Thread Petr Savicky
On Fri, May 04, 2012 at 07:43:32PM +0200, Kehl Dániel wrote: > Dear Petr, > > thank you for your input. > I tried to experiment with (probably somewhat biased) truncated means > like in the following code. > How I got the 225 as a truncation limit is a good question. :) > > REPS1 <- REPS2 <- 100

Re: [R] estimation problem

2012-05-04 Thread Kehl Dániel
Dear Petr, thank you for your input. I tried to experiment with (probably somewhat biased) truncated means like in the following code. How I got the 225 as a truncation limit is a good question. :) REPS1 <- REPS2 <- 1000 N1 <- 10 N2 <- 3 N <- N1+N2 x1 <- rep(0,N1) x2 <- rnorm(N2,300,10

Re: [R] estimation problem

2012-05-03 Thread Petr Savicky
On Thu, May 03, 2012 at 03:08:00PM +0200, Kehl Dániel wrote: > Dear List-members, > > I have a problem where I have to estimate a mean, or a sum of a > population but for some reason it contains a huge amount of zeros. > I cannot give real data but I constructed a toy example as follows > > N1 <

Re: [R] estimation problem

2012-05-03 Thread Kehl Dániel
Dear Jeff, thank you for the response. Of course I know this is a theory question still I hope to get some comments on it (if somebody already dealt with alike problems might suggest a package and it would not take longer than saying this is a theoretical question) The values are counts, so 0 m

Re: [R] estimation problem

2012-05-03 Thread Jeff Newmiller
Although you have provided R code to illustrate your problem, it is fundamentally a statistics theory question, and belongs somewhere else like stats.stackexchange.net. When you post there, I recommend that you spend more effort to identify why the zeros are present. If they are indicators of u

[R] estimation problem

2012-05-03 Thread Kehl Dániel
Dear List-members, I have a problem where I have to estimate a mean, or a sum of a population but for some reason it contains a huge amount of zeros. I cannot give real data but I constructed a toy example as follows N1 <- 10 N2 <- 3000 x1 <- rep(0,N1) x2 <- rnorm(N2,300,100) x <- c(x1,x2)