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Excel Stats Errors

If you use Excel to do statistics of any type, you should know that Excel has a large variety of known errors in its statistical functions. Excel is popular and widely used, but it is not a statistical software package. Microsoft Excel 2000, 2003, and 2007 Faults, Problems, Workarounds, and

How Much Math do we really need?

How much math do we really need? by G.V. Ramanathan Twenty-seven years have passed since the publication of the report "A Nation at Risk," which warned of dire consequences if we did not reform our educational system. This report, not unlike the Sputnik scare of the 1950s,

Animated Graphs using R and LaTeX

Animated Graphs using R and LaTeX

Here is a good example of how to create animated graphs using R and LaTeX. Even if you aren't interested in the details of how this is done, I am fascinated by the graph that is created, French male mortality by age by year. h/t TeXtip

Law Career Paths

A friend sends along the following information regarding lawyers. This may be true, but don't let that confuse you into believing that law grads are either bound for success or not. In fact, many highly successful students will intentionally end up on the lower side of the graph

How Salary Data Should Be Reported

How Salary Data Should Be Reported

Another interesting thread in the PhysicsForums. This one was a question about the salaries earned by PhD physicists. The poster seemed to be from Central Europe, the Czech Republic perhaps, and wanted to know whether physicists actually earned $90k on average. The consensus was yes, this information is basically accurate

University Rankings

Rankings are always fun, they generate lots of controversy, and sometimes they are even useful. Matt Briggs complied a set of college rankings that are all very different. There is a set by the Wall Street Journal about which schools recruiters use to reliably fill certain positions. There are a

Overview of Psychometrics

Steve Hsu gave a brief introduction to the science of psychometrics at Foo and SciFoo this year. He was kind enough to share his slides. This is a pretty good overview of the important bits. He also has some discussion of his slides here. Thanks for sharing Steve!