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This paper highlight using critical ratio for different to determine the statistically significant different.There are 3 ways to approaching the significant discrepancy between these variables for moderator effect: 1. The t-test can be used when the researcher intend to address the difference path between categorical variable (e.g male and female). But when comes to test the sample mean, the sample size should be less than 30. This method is appropriate for the less sample size. 2. The heterogeneity test also can be conducted. This method can be classify as the chi-square different test. Basically, chi-square is the nonparametric since this distribution is skew to the left but when comes to examine different path, this method is becomes useful. According to zainudin awang, 2010 explain the the chisquare difference is the same things as z-score or z-test. Z-test is normal test which greater than 30 of sample size. 3. The last one is by using critical ratio for differences. This results can be obtained in AMOS output. According to Byrne, 2010 explain the critical ratio for different test is consists of z-test. Thus, this step can be carry on.