Autocorrelation test. To be sure that the residuals are free from autocorrelation complicity in the estimated model, this study conducted serial correlation test using Xxxxxxx-Xxxxxxx approach and the results were shown on the Table 5. Table 5: LM serial Correlation Test Xxxxxxx-Xxxxxxx Serial Correlation LM Test: F-statistic 0.327369 Prob. F(2,7) 0.7313 Obs*R-squared 1.368537 Prob. Chi-Square(2) 0.5045 The null hypothesis (H0) for this test is that the residuals are uncorrelated serially. Looking at Table 5, the F-stat p-value is 0.7313, which greater than 0.01 and 0.05 critical values; it shows that we could not reject the null hypothesis at both 1% and 5% significance levels. Hence, we concluded that the residuals were uncorrelated serially and the coefficients produced by the estimated model were not biased.
