Alfa de CronbachConsistencia interna

0.9Excelente

0.9 > 0.8Bueno

0.8 > 0.7Aceptable

0.7 > 0.6Cuestionable

0.6 > 0.5Pobre

0.5 > Inaceptable

George, D. y Mallery, P. (1995). SPSS/PC-Step by step A simple guide and reference. Belmont: Wadsworth Publishing CompanyGeorge, D., & Mallery, P. (2003). SPSS for Windows step by step: A simple guide and reference. 11.0 update (4th ed.). Boston: Allyn & Bacon. p.231