statistics

In order to make a presentation, I was wondering how to display the variance of a distribution, or the variance, of a sample on a graphic. Finally, I've found this solution: What is this “ellipse” with an arrow ? This is a picture commonly used in classical...

Sample size determination for a mean Sample size determination for a mean This article explains the methodology implemented in the Shiny application availbale at http://glimmer.rstudio.com/stla/samplesize_mean/ Statement of the problem Consider a preliminary...