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Where:SSE1 : Sum Square Error from model Ordinary Least SquareSSE2 : Sum Square Error from Fixed Effect Modeln : Number of companies (cross section)nt : Total cross section x total of time seriesk : The number of independent variablesTo compare with the value of F table, can use the following formula :α : The significance level used (alfa)n : Number of companies (cross section)nt : Total cross section x total time seriesk : The number of independent variablesb. Hausman-TestAfter conducting the Chow test then the next we will examine which model the Fixed Effects Model or RandomEffects Model the most appropriate, this test is referred to as the Hausman test.Tests conducted by the Hausman test the following hypotheses :H0 : Random Effect ModelH1 : Fixed Effect ModelThe Hausman test statistic follows the Chi Square statistic distribution with degree of freedom as k-1, where k isthe number of variables of the study overall. If the value of the Hausman statistic is greater than the critical valuethen H0 is rejected and the appropriate model is the Fixed Effects Model while the opposite when the value ofthe Hausman statistic is smaller than the critical value then the appropriate model is the Random Effects Model.c. Lagrange MultiplierLagrange Multiplier (LM) is a test to determine whether the Random Effects Model or Ordinary Least Squaremodel is most appropriate.Hipotesis yang digunakan adalah :H0 : Ordinary Least Square ModelH1 : Random Effect ModelLM test is based on the chi-squares distribution with degree of freedom for the number of independent variables.If the value of the LM statistic greater than the critical value of chi-squares statistic we reject the null hypothesis,which means that a precise estimate for the panel data regression model is a model of Random Effects Model ofthe Model Ordinary Least Square. Conversely, if the value of the LM statistic is smaller than the value of chisquaresas a critical value, then we accept the null hypothesis, which means that the estimates used in the paneldata regression model of Ordinary Least Square is not Random (Random Effects Model).4.2.Hypothesis testing4.2.1.Hypothesis Test Using the t test (partial)After making the overall regression coefficient test, then the next step is to calculate the individual regressioncoefficients (partial), using a test known as the t test. The hypothesis in this test is as follows :H0 : βj = 0H1 : βj ≠ 0; j = 0,1,2 ….,kk is the slope coefficientFrom the hypothesis, it can be seen whether the independent variables have a significant influence onthe dependent variable. T values resulting from the processing will be compared with the value of the t table. If itturns out after │t count│> t table, the t values are in the rejection region, so that the null hypothesis is rejected atconfidence level (1-α) × 100%. In this case it can be said that the statistically significant independent variableson the dependent variable.4.2.2.Hypothesis Testing Using the F test (simultaneous)F test is used to determine whether all the independent variables together can influence the dependent variable(the goodness of fit model). F test is done by comparing the F count and F table with a predetermined degree of
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