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That’s Smooth
I had someone ask me the other day how to take a scatterplot and draw something other than a straight line through the graph using Excel. Yes, it can be done in Excel and it’s really quite simple, but...
View ArticleRandom Sequence of Heads and Tails: For R Users
Rick Wicklin on the SAS blog made a post today on how to tell if a sequence of coin flips were random. I figured it was only fair to port the SAS IML code over to R. Just like Rick Wicklin did in his...
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Beta Distribution and the NJ U.S. Senate Election
The beta distribution is highly flexible distribution and applies to many situations and environments. The beta distribution applies well when there are percentages. The upcoming New Jersey U.S. Senate...
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Tracking the 2013 Hurricane Season
With it nearing the end of hurricane season it’s only appropriate to do a brief summary of the activity this year. It’s been a surprisingly low-key season as far as hurricanes are concerned. There...
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Spatial Clustering With Equal Sizes
This is a problem I have encountered many times where the goal is to take a sample of spatial locations and apply constraints to the algorithm. In addition to providing a pre-determined number of K...
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Some Options for Testing Tables
Contingency tables are a very good way to summarize discrete data. They are quite easy to construct and reasonably easy to understand. However, there are many nuances with tables and care should be...
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Probabilities and P-Values
P-values seem to be the bane of a statistician’s existence. I’ve seen situations where entire narratives are written without p-values and only provide the effects. It can also be used as a data...
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The Birthday Simulation
Nothing novel or unique about this problem. This just extends the problem to measure the probability to three or more people sharing the same birthday using simulation approaches. Though there are...
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Recent Articles
I have uploaded a few papers I have written and presented at some national conferences over the past several years. Currently, all the articles relate to election research.
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R Code for Election Posterior Distribution From a Random Sample
I wrote a summary article a couple of years ago discussing some probability aspects of the 2012 Presidential general election with a particular focus on exit polling. I’ve had a few people email me...
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