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...regression by 10, I would expect that the coefficient would be multiply by 10 and the z value to stay constant. Here some reproducible code to support the case. *Ex 1* library(mvtnorm) library(VGAM) set.seed(1) x=rmvnorm(1000,sigma=matrix(c(1,0.75,0.75,1),2,2)) summary(vglm("y~x",family=studentt2,data=data.frame("y"=x[,1],"x"=x[,2]))) summary(vglm("y~x",family=studentt2,data=data.frame("y"=x[,1]*10,"x"=x[,2]))) summary(vglm("y~x",family=cauchy1,data=data.frame("y"=x[,1],"x"=x[,2]))) summary(vglm("y~x"...

Hi All, I get the following error when i perform a t.test. studentt<-apply(tlr, 1, function(x) t.test(x[2:6], x[7:11],var.equal=TRUE)$p.value) # tlr is a table of 11 columns and 22500 rows. I am not able to post tlr due to its size. Error in if (stderr < 10 * .Machine$double.eps * max(abs(mx), abs(my))) stop("data are essentially constant") :...

...Singh-Maddala Distribution Family Function skewnormal1 Univariate Skew-Normal Distribution Family Function smartpred Smart Prediction snorm Skew-Normal Distribution sratio Ordinal Regression with Stopping Ratios studentt Student t Distribution tikuv Short-tailed Symmetric Distribution Family Function tobit Tobit Model trplot.qrrvglm Trajectory plot for QRR-VGLMs uqo Fitting Unconstrained Quadratic Ordination vgam...