@booklet {tam-mrrassp2002,
	title = {Monotone Regrouping, Regression, and Simpson S Paradox},
	howpublished = {Discussion Papers},
	year = {2002},
	month = {12},
	publisher = {The American Statistician 57 (2003), 139-141},
	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.},
	url = {/files/db305.pdf},
	author = {Tam, Yosef Rinott and Michael, Howlett,}
}
