Category Archives: Stats Tips

In statistical hypothesis testing, you often have the choice between tests that assume a certain distribution of the underlying data and tests that don’t make these assumptions.  For example, when evaluating a drug trial, you can choose between, e.g., the … Continue reading →

Ravioli, Spaghetti, Bonferroni, Canneloni, Lasagna. All delicious products made from semola di grano duro. Add tomato sauce, put some grana on top, serve with Chianti. (Or Teroldego if, like me, you’ve spent some time in the Trentino.) Mjam!

In a paper, published at a peer-reviewed conference, the authors wished to test the hypothesis that their univariate data was distributed according to an exponential distribution. They didn’t get it quite right.

I’ve recently seen a paper, published at a peer-reviewed conference, where the authors argue that some inter-arrival times were exponentially distributed and that the number of events per unit time were poisson distributed. They did some statistical tests and concluded … Continue reading →