doctoral_advisor death_place death_date birth_place nationality fields workplaces birth_date known_for article_title name alma_mater
louis leon thurstone savoy , illinois 16 august 2004 glenwood springs , colorado american mathematics educational testing service 19 september 1910 angoff model method tucker decomposition tucker -- koopman -- linn ledyard tucker
 ledyard tucker university of colorado university of chicago
ledyard tucker

ledyard r. tucker -lrb- 19 september 1910 -- 16 august 2004 -rrb- was an american mathematician who specialized in statistics and psychometrics .
his ph.d. advisor at the university of chicago was louis leon thurstone .
tucker is best known for his tucker decomposition and tucker -- koopman -- linn model .
he is credited with the invention of angoff method .
