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The only factor analysis is considered appropriate when the coefficient KMO (Kaiser-Meyer-Olkin) worth from 0.5 or more, Barlett's test Test used to look, assuming the variables have no correlation in master (Huang and Chu Nguyen Ngoc Dream), the variable transmission ratio smaller than 0.5 will be disqualified. The method of extracting "Principal Component Analysis" is used with rotations "Varimax", only the factors which Eigenvalue modification is greater than 1 is retained in the new research model (and Chu Nguyen Ngoc Vision, 2008). [9]
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