00686nab a2200193 uc450000100070000000500170000700800410002403500110006503500210007604000130009704100080011010000330011824501230015165000270027465000260030165000270032765000310035477301070038584124020260424102123.0030829s1997                        eng    a841240  a(OCoLC)820074210  ccomduadb  aeng10aOjeda, Mario Angel4auteaut10aA two level regression model for studying achievement of engineering students of Universidad del Valle, Cali, Colombia  aModelos de regresión 7aAnálisis de datos2  aModelos estadísticos 7aVariables aleatorias2lemb0 tInvestigación Operacional (La Habana)gVol. 18, No. 01-03, 1997, p. 69-74w508470x0257-43060122068