Read Part II : Download the Quirk’s article. Predictive statistics differs from classical (frequentist and Bayesian) practices because it focuses on observables and not metaphysical entities. Observables are the data…

Read Part I : Download the Quirk’s article. To understand why ordinary regression assumptions are bad, we need to look at some (new data) scenarios. Suppose that Bob had a…

Thanks to readers Ari Schwartz and Tom Pollard for suggesting this article. Take any two sets of numbers, where the only restriction is that a reasonable chunk inside each set…

Read Part I The Analysis (cont.) Two problems arise when comparing a model's integration (the forecast) with an analysis of new observations, which are not found when comparing the forecast…

Only a couple of days left, everybody. Then back to more interesting subjects. Incidentally: when is the best time to contact a statistician? Before you begin to collect data. You…

The Siena Research Institute asked 238 presidential scholars to rank each president from 1 (best) to worst (43) in nineteen different categories, plus one overall ranking. A complete list of…