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# Stéphane Laurent

Tags associés : r

## Ses blogs

stla.overblog.com
Stéphane Laurent
Articles : 7
Depuis : 25/11/2012
Categorie : Technologie & Science

### Articles à découvrir

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 experiment $${\cal E}_0$$, whose issue is a sample $$y_0$$ of size $$n_0=5$$ generate
A reactive sliced 3D surface response A reactive sliced 3D surface response In my previous article I showed an interactive 3D surface response fitted from a model with two continous predictors. But when there is more than two continuous predictors, since we can use only two predictors at time in the image, we can only show a surface plot depending
In this article you will firstly see how to get rational numbers arbitrary close to $$\pi$$ by performing the binary splitting algorithm with the gmp package. The binary splitting algorithm fastly calculates the partial sums of a rational hypergeometric series by manipulating only integer numbers. But these integer numbers are generally gigantic
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 mechanics to represent the moment of inertia of a body spinning around an axis of rotati