The Marine Corps Marathon – cleaning the data

The 2014 Marine Corps Marathon took place on October 27th on a course that runs through Washington DC and Arlington, VA. This year my son ran in the race so I was there for the excitement. But being an observer introduced me to some to the data quality issues. During the race I was set […]

Interview by Kaiser Fung of Numbersense

Kaiser Fung has posed an interview with me over at his site: Numbersense. It is a two part interview – Part 1, Part 1. Read at your leisure. Kaiser is the author of Numbers Rule Your World and Numbersense: How to Use Big Data to Your Advantage.

Tornado graphics that don’t work

It was inevitable that after the devastating tornado in Moore, OK others would ask what is the tornado risk in my area. The Washington DC area was no exception. The Washington area Capital Weather Gang posted a piece about tornadoes in the Washington forecast area. But the graphics just do not work. The lead visualization […]

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