similar to: difference percentile R vs SPSS

Dear all, I need to do a loop in R, but I am not sure the software is generating "n" times the variables I request differently. When I ask to print the last matrix created, I just can see the loop for n=1. To be more precise, supose I need to simulate 10 times one variable and I want to fit the 10 variables simulated in a matrix. I dont really know what I am doing wrong, but I just

Hi, I am trying to calculate confidence intervals using ci.numeric from epicalc package. If I generate a normal set of data and find the 99% and 95% CI, they seem too narrow to me. Am I doing something wrong?? The IQR goes from -0.62 to 0.62, so I thought the CI limits should be more extreme than these values. x<- rnorm(200,0,1) ci.numeric(x=mean(x),n=200,sds=sd(x),alpha=0.05) n

Dear sir, Dear Madam I begin with R and I couldn't find in the manuels how I can solve this this problem find n such as |1/ni*sum(Wi)|<0.2 with Wi<-c(rnorm(200,0,1)) Thanks for helping Best regards ------------------------------------------ [[alternative HTML version deleted]]

Hello, We have a question about how to retrieve the nonparametric curve in gam() function. Now, we get the estimates and draw the fitted curve using the following code. You can see that our fitted curve is parallel to the output from gam() function but differs by a constant shift. However, the magnitude of the shift is not the intercept term. Also, gam's estimate appears more close to the

Dear List-Members, I have a problem with the function lqs() from package MASS. In some cases it produces different results for the same settings and needs a random seed to be set, in other cases not. I really cannot understand, why this happens. As well I do not understand what exactly you need the random seed for. Is it a starting point for iterations? Or do different results occur because of