Using the method of reliability coefficient Cronbach's Alpha factor analysis before the EFA to the type of the variable is not suitable because the variables of this rubbish can create pseudo elements (Nguyen Dinh Tho & Nguyen Thi Mai Trang, 2009).Trusted Cronbach's Alpha coefficient indicates the measure have links with each other or not; but don't tell any observation variables need to leave, and the observed variables would need to hold back. Meanwhile, the calculation of correlation between variables-General will help sort out the variables observed would not contribute much to the description of the concept of measure (Weight & Chu Nguyen Ngoc Dream, 2005).
đang được dịch, vui lòng đợi..