This article advocates biased spinners as an engaging context for statistics students. Calculating the probability of a biased spinner landing on a particular side makes valuable connections between probability and other areas of mathematics. (Contains 2 figures and 1 table.)

The feature that makes item response theory (IRT) models the models of choice for many psychometric data analysts is parameter invariance, the equality of item and examinee parameters from different populations. Using the well-known fact that item and examinee parameters are identical only up to a set of linear transformations specific to the…

This paper presents and illustrates a technique that can be used to analyze the internal and external influences on community college enrollment trends and staffing patterns in a way that quantitatively expresses the amount of increase or decrease attributable to various competing factors. Introductory material relates the rationale behind the…