As a general rule, you should not transform your data to try to fit a linear model. But proportions can be tricky. If the proportion data do not arise from a binomial process (e.

In a previous post, I showed how to keep text and symbols at the same size across figures that have different numbers of panels. The figures in that post were ugly because they used the default panel spacing associated with the mfrow argument of the par function.

You’ve probably heard of the traveling salesman problem: given a set of cities, what is the shortest possible route that visits each city exactly once and returns to the origin city?