After using the library Resample for some time suddenly the basic bootstrap function gives the following error message: "Did 1000 replications, saving results in .bootstrap.partial.results, interrupt
Using S+ version 6.1 I had a working version of the library Resample, but I was foolish enough to overwrite it by downloading the updated version, which is for S+ 7.0. And this version of the library
I hope someone can help with this probalbly elementary problem: How do I generate random samples from a multinomial distribution? Does there exists a function analog to rbinom for S-PLUS (vers. 6.1)?
Dear list members. I have a trivial problem with importing date variables, that I can't solve myself. Can anyone help? I am importing files from SPSS (vers 10.0) into S-PLUS 6.0 release 3 and the dat
I have always just naively thought about gaussian distributions as having skew 0 and kurtosis 0. Would you give a few more hints about cumulant versus moment based definitions? Jan Ivanouw Institute
I am looking for participants for an e-mail based study group on bootstrap methods based on reading 'Bootstrap Methods and their Application' by Davison and Hinkley. My idea is to form a small group
Dear List members Some time ago I (a newbee) asked a probably rather stupid question, which accordingly did not get any answers. But since it is important for me, I now try again: I have an SPSS data
Hi All I am working in the field of psychology. When constructing psychological tests one consideration is the internal consistency of the test items, i.e. do all items have to do with the same psych
I asked about procedures for importing non-continuous variables from SPSS and got the following answers. Thank you to all. Jan Ivanouw A rather heavy-handed method that springs to mind is to run impo
I asked about S+ functions for calculating reliability and got the following answers. Thank you to all. Jan Ivanouw Peter Ellis wrote a wraparound function using a Cronbach's alpha function supplied
I asked about S+ models for Item Response Theory Chris Barker answered. Thank you. Jan Ivanouw look for mcmcirt.zip Markov chain Monte Carlo code for estimating item response theory (IRT) models, inc
Hi All I have an empirical variable the frequence distribution of which seems to follow a Gamma distribution. I can find the theoretical parameters by trial and error but: How can I estimate the shap
Dear List members Excuse a very simple question from a newbee: I have an SPSS data file with 3000+ variables which is updated on a regular basis. I want to keep this as an SPSS file, but I would like
I am sorry for my lack of knowledge. I have a data frame with a variable (column) containing the integers 1, 2, 3, 4 and 5. I want to recode the variable so 5=1, 4=2, 3=3, 2=4 and 1=5. How do I do th
I am sorry I can't find the solution to this simple problem. Can anyone help? I have a (large) data frame with missing values, like this: a b c 1 3 5 NA 9 2 3 5 2 NA 8 6 5 3 7 Based on non-missing va
Dear S-plus users On the historgram graph for an observed distribution I want to overlay a normal density distribution with the same mean and SD (and later in the analyses produce graphs with several
Thank you. This works very fine. How would I do to overlay a histogram of the theoretical Poisson distribution with same mean unto the histogram with the observed data? Jan Ivanouw -- Original Messag
Thank you. This is very helpful. How would I make an overlay like the Poisson here, but instead with and overlay of the Negative BInomial distribution? Jan -- Original Message -- From: wdunlap@tibco.
Hi BIll, Thank you. What I find difficult is which arguments to give to the dnbinom function in order to get the same mean and standard deviation as the observed distribution. Do you have any hints?