Articles by John Quick

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

July 19, 2010 | John Quick

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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R Beginner’s Guide Book Update 4/28/2010

April 28, 2010 | John Quick

Update: Statistical Analysis with R is now available!I am writing to update you on the progress of my R Beginner's Guide book, which is to be published through Packt. I have really gotten to work over the past couple months and have recently completed ...
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R Tutorial Series: Basic Polynomial Regression

February 8, 2010 | John Quick

Often times, a scatterplot reveals a pattern that seems not so linear. Polynomial regression can be used to explore a predictor at different levels of curvilinearity. This tutorial will demonstrate how polynomial regression can be used in a hierarchical fashion to best represent a dataset in R.Tutorial FilesBefore we ... [Read more...]

R Tutorial Series: Regression With Categorical Variables

February 1, 2010 | John Quick

Categorical predictors can be incorporated into regression analysis, provided that they are properly prepared and interpreted. This tutorial will explore how categorical variables can be handled in R.Tutorial FilesBefore we begin, you may want to download the sample data (.csv) used in this tutorial. Be sure to right-click and ... [Read more...]
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