A new book by Jeffrey Stanton from Syracuse Iniversity School of Information Studies, An Introduction to Data Science, is now available for free download. The book, developed for Syracuse’s Certifi…

# Author: admin

## Graphical tools for model selection in generalized linear models – Murray – 2013 – Statistics in Medicine – Wiley Online Library

Model selection techniques have existed for many years; however, to date, simple, clear and effective methods of visualising the model building process are sparse. This article describes graphical methods that assist in the selection of models and comparison of many different selection criteria. Specifically, we describe for logistic regression, how to visualize measures of description loss and of model complexity to facilitate the model selection dilemma. We advocate the use of the bootstrap to assess the stability of selected models and to enhance our graphical tools. We demonstrate which variables are important using *variable inclusion plots* and show that these can be invaluable plots for the model building process. We show with two case studies how these proposed tools are useful to learn more about important variables in the data and how these tools can assist the understanding of the model building process. Copyright © 2013 John Wiley & Sons, Ltd.

## How to Remove Duplicate Data in R – For Dummies

A very useful application of subsetting data is to find and remove duplicate values. R has a useful function, duplicated() , that finds duplicate values and returns a

## The Analysis Factor — Statistical Consulting, Resources, and Statistics Workshops for Researchers in Psychology, Sociology, and other Social and Biological Sciences

## Free e-book on Data Science with R

## Installing R in Ubuntu

Nice … but must to the dots

For mirror, I add this to the repository :

deb http://cran.ma.imperial.ac.uk/bin/linux/ubuntu quantal/

## Blog with R Markdown and tumblr: Part I

Nice article by : http://jeffreyhorner.tumblr.com/post/25804518110