Regressionanalysishasbecomeoneofthemostwidelyusedstatisticaltoolsforanalyzingmultifactordata.Itisappealingbecauseitprovidesaconceptuallysimplemethodforinvestigatingfunctionalrelationshipsamongvariables.Thestandardapproachinregressionanalysisistotakedata,fitamodel,andthenevaluatethefit