Riskcontrol,capitalallocation,andrealisticderivativepricingandhedgingarecriticalconcernsformajorfinancialinstitutionsandindividualtradersalike.EventsfromthecollapseofLehmanBrotherstotheGreeksovereigndebtcrisisdemonstratetheurgentandabidingneedforstatisticaltoolsadequatetomeasureandantic