Labor (1) Students (1) Quality of products (1) Least squares (1) Human behavior (1) Friendship (1) Forecasting (1) Families (1) Error (1) Equations (1) Cities and towns (1) Behavioral assessment (1) Conducta--Evaluación (1) Mínimos cuadrados (1) Prospectiva (1) Error (1) Calidad (1) Estudiantes (1) Ecuaciones (1) Ciudades (1) Conducta (1) Familias (1) Amistad (1) Trabajo (1)