I've been doing more analysis of the Philadelphia Homicide data that the Philadelphia Inquirer has published, and presented some of it at the Philadelphia UseR group yesterday. My slides and source are on github.I should be clear tha...

Many thanks to Jim Guszcza (Predictive Analytics lead at Deloitte Consulting and Assistant Professor at UW-Madison) who gave a great webinar presentation yesterday on actuarial analysis with R. Jim's demo (starting at the 20 minute mark in the video replay below) is a great way to get a sense of how R is used for exploratory data analysis and...

This post is a slightly revised (and "blogified") version of the message Brian Peterson has sent to various R mailing lists.Once again, R has been accepted as a mentoring organization for the Google Summer of Code (2012). We invite students interested in this program to learn more about it. A good starting point...

Let’s say you are in the middle of a salary negotiation, and you want to know whether you should be aggressive in your offering or conservative. One way to help with the decision is to make a decision tree. We’ll work with the following assumptions: You are at a job currently making $50k You have the choices between...

Statistics.com is offering a new online course, “Survey Analysis in R,” debuts March 23 – April 20, with Dr. Thomas Lumley. Dr. Lumley is the creator of the R package “Survey,” and the author of the course text – “Complex Surveys: A Guide to Analysis Using R.” The course is suitable for those with some familiarity with R and...

In my last blog I created a mechanism to fetch data from Salesforce using rJava and SOQL. In this blog I am going to use that mechanism to fetch ad campaign data from salesforce and predict future ad campaign sales using R Let us assume that Salesforce has campaign data for last eight quarters. This