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.
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Publisher Info
Paper provided by Center for Rationality and Interactive Decision Theory, Hebrew University, Jerusalem in its series Discussion Paper Series with number
dp305.
Length: 7 pages Date of creation: Dec 2002 Date of revision: Publication status: Published in The American Statistician, 2003, vol. 57, pp. 139-141. Handle: RePEc:huj:dispap:dp305