Students (2) Least squares (2) Leadership (2) Equations (2) Competition (2) Business enterprises (2) Mínimos cuadrados (2) Factores (2) Empresas (2) Liderazgo (2) Estudiantes (2) Ecuaciones (2) Competencia económica (2) Chili (1) Labor (1) Labor leaders (1) Employees (1) Supermarkets (1) Selling (1) Research (1) Quality of products (1) Population (1) Perception (1) Occupations (1) Mineral industries (1) Industries (1) Industrial productivity (1) Id (Psychology) (1) Human capital (1) Human behavior (1)