As I mentioned in a previous post, I compiled the data set that I’m currently working on in PostgreSQL. To get this massive data set, I had to write a query that was massive by dint of the number of … Continue reading →
Posts Tagged ‘ dummy variables ’
Ack! Duplicates in the Data!
Example 8.6: Changing the reference category for categorical variables
How can we change the reference category for a categorical variable? This question comes up often in a consulting practice.When including categorical covariates in regression models, there is a question of how to incorporate the categories. One simpl...
R: The Dummies Package
R-2.9.2 was released in August. While R can be considered stable and battle-ready, it is also far from stagnation. It is humbling to see such an intelligent and vibrant community helping CRAN grow faster than ever. Every day I see a new package or read a new comment on R-Help
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
