search for: sigmastat

...nalysis in R on some data for which I also have a printout of a similar analysis carried out by someone else. The results (intercept, coefficient, SEs etc.) differ somewhat, though not greatly. >From the printout of the other analysis, it seems that it may have been produced by software called SigmaStat. (I'm going by the clue "Power of performed test with alpha = 0.0500: 1.000" in the printout, which on a google search throws up a lot of SigmaStat and sometimes SigmaPlot; the web pages illustrate tabulations by SigmaStat which are very similar in layout to the printout I have...

...583,15.77,29.341,30,17.1,30,30,30,30,20.451,30,23.967,30.507,30,30,30,27 .7,30,28.5,22.568,32.379,30.374,28.263) h<-factor(c(rep(1:11, each = 10))) result<-summary(simtest(y ~ h,cmatrix=cbind(0,m))) rownames(result$estimate) result I want to compare my results with the results obtained with SigmaStat Software. In my results, i retrieve a correct q' value with the simtest t value How can i say if P<0.05 like the SigmStat results? Can i use p raw value, p bonf value, p adj value or other to compare directly? Or can i use the Dunnett's tables? Thanks for your help! Laurent Houdusse...

Hi, I use ks.test or lillie.test to verify a normal distribution. It's performed for a group My users use SigmaStat software and a One Way ANOVA on several groups In the result page there is a probability value to determine if Normality test is failed or passed So, how can i retrieve this probability value on several groups? Is there another function in R to verify normality on several groups? Thanks Laurent...

...regression is not so interesting in itself, but this particular value does raise a question. How does R calculate (extremely low) p-values for linear regression? For my data I got a p-value on the order of 10^-9 and a reviewer commented on this. I tried to run the same analysis in both SAS and Sigmastat to be sure that I was doing it right, but both these programs only return a p-value of p < 0.0001 Since I am unable to reproduce my results in another statistics program, it would be nice to be able to explain this unusally low p-value to the reviewers. This "problem" can be illustra...

...Biostatistics 1 > Rossner': Fundamentals of Biostatistics, 5th Edition 1 > Fowler & Cohen: Practical Statistics for Field Biology 1 > > Splus/R 8 > SPSS 5 > JMP 5 > Systat 4 > Statview 3 > Minitab 3 > Excel 2 > Sigmastat 2 > Statistica 1 > > I want to thank everyone who replied and offered words of encouragement and > advice. Again, if you want the entire set of messages, drop me a note and > get ready for a big document. > > Cheers, George > > =================================...