This is a nice summary of the advantages and disadvantages of various methods for handling missing values. Continue reading
Category Archives: Recommended
Recommended: Meet John Gawalt, Director of the National Center for Science and Engineering Statistics
This is a brief interview with John Gawalt, the new director of the National Center for Science and Engineering Statistics within the National Science Foundation. Continue reading
Recommended: 8 tips for doing data visualization right.
This slide show includes some examples of really bad (and a few really good) graphics with some explanations of general principles for data display. Continue reading
Recommended: Data doesn’t speak for itself
This blog post explains that you can’t just put a graph up on a screen and immediately expect people to understand it. You need to provide critical context to help your audience. Continue reading
Recommended: The random risks of randomised trials
This is an overview of some of the ethical controversies associated with randomization. It includes an interesting story of an early trial by Archie Cochrane that raised a lot of fuss at the time because it was attacking one of the “sacred cows” of medicine. Continue reading
Recommended: More on Big Data Training for the Scientific Workforce
The United States National Institutes for Health is very interested in big data and has developed a working group, Big Data to Knowledge (BD2K). This blog post from Sally Rockey, the Deputy Director for Extramural Research, summarizes some of the recent activity of BD2K. Continue reading
Recommended: Meet Charles J. Rothwell, Director, National Center for Health Statistics
This is a brief interview with the director of the National Center for Health Statistics, a statistical agency for the United States government that produces many nationally representative health surveys. Continue reading
Recommended: Qualifications for Teaching an Introductory Statistics Course
The American Statistical Association and the Mathematical Association of America published a joint statement on the qualifications that a college teacher would need in order to teach an introductory statistics course for undergraduate students. This is an issue in many Mathematics Departments which might need to teach such a class but would not be big enough to have a degreed Statistician. A minimum amount of course work is needed, but also practical experience with data analysis, which might come from “advanced courses, projects, consulting, or research.” Continue reading
Recommended: plotrix: Various plotting functions
R has a lot of nice plotting features built in, but this add-on package adds some more, especially the ability to designate a break in one of your axes. Continue reading
Recommended: A guide to the line style arguments for R graphics
Melissa Clarkson created a very nice two page PDF file that shows very clearly the sometimes subtle difference in how various line style arguments work in R. Highly recommended for any R programmer. Continue reading