Monthly Archives: July 2010

R Beginner’s Guide Book Update 7/19/2010

July 19, 2010
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R Beginner’s Guide Book Update 7/19/2010

Update: Statistical Analysis with R is now available!I am excited to announce that I have submitted the entire first draft of my R Beginner's Guide book, which is to be published through Packt. The tenth and final chapter was submitted a full month ahe...

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Welcome to Gosset’s student

July 19, 2010
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Welcome to Gosset’s student

Welcome to Gosset’s student, a blog about statistics, with a focus on using R.  We’re all learning R, as it’s constantly being improved.  The blog will aim for brevity, and a focussed approach to getting some stats done, rather than elegance of code.  Discussions which show how to replicate the result in a more elegant fashion, or

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Creating a Presentation with LaTeX Beamer – Boxes

July 19, 2010
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Creating a Presentation with LaTeX Beamer – Boxes

We can add coloured boxes with text or mathematics into a LaTeX beamer presentation which is particularly useful if we have definitions, theorem or computer code to highlight this information that may not be so accessible within a paragraph of text. Fast Tube by Casper The easiest way to create a box is to use the various

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New StackOverflow site for Statistics

July 19, 2010
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Since launching StackOverflow.com as a Q&A forum for programmers, the StackExchange network is now launching about three new sites a week on topics as specialized as cooking, jobs, and many many more. There's a well-defined, community-oriented process for setting up a new site: first it must be proposed, and then enough potential users must commit to the site and...

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Using R for Data Management, Statistical Analysis and Graphics soon to start shipping

July 19, 2010
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Using R for Data Management, Statistical Analysis and Graphics soon to start shipping

Our newest book, Using R for Data Management, Statistical Analysis and Graphics, is anticipated to soon start shipping from Amazon, CRC Press, and other fine retailers. The book complements our existing SAS and R book, particularly for users less inte...

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Flexmix taks long time…

July 19, 2010
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Flexmix taks long time…

I am running a mixture logit model on a sample of 10,000 cases. The model takes a long time (3-4 hours) to run, which makes it nearly impossible to try different specifications and such. It probably makes sense to use a subsample for exploratory analys...

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Npmlreg and Flexmix

July 18, 2010
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Npmlreg and Flexmix

In my attempt to estimate a mixture regression model for the long-term impact of prenatal famine exposure, I compared results obtained from NPMLREG and Flexmix using the "rainfall" data set came with the package "forward" and was able to achieve identi...

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Join the Statistical analysis Q&A beta

July 18, 2010
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Join the Statistical analysis Q&A beta

Statistical Analysis Q&A is a web page dedicated to exchange questions, answers and ideas primarily on statistics.

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Cherry Picking to Generalize ~ retrospective meta-power analysis using Cohen’s f^2 of NASA temp + visualization

July 17, 2010
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Cherry Picking to Generalize ~ retrospective meta-power analysis using Cohen’s f^2 of NASA temp + visualization

Previously, I plotted a grid of NASA GISS global temps in ggplot2 to show general trends by the brute force method. Here, I will again use the brute force method to do a simple power analysis on a portion of the data (data here). The general aim is to figure out what the minimum sample

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Latent variable analysis package for R

July 17, 2010
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Latent variable analysis package for R

This is another R package for latent variable analysis. I hope it can soon include multilevel and mixture modeling capacity. Another promising package is OpenMx, which is also under active development and very promising. At this moment, OpenMx seems to...

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