Citation:
Tam, Yosef Rinott, and Michael, Howlett. “Monotone Regrouping, Regression, And Simpson S Paradox”. Discussion Papers 2002. Web.
Abstract:
We show in a general setup that if data Y are grouped by a covariate X in a certain way, then under a condition of monotone regression of Y on X, a Simpson s type paradox is natural rather than surprising. This model was motivated by an observation on recent SAT data which are presented.