Logit model is used for the dependent variable has only 2 values. The value of the dependent variable is 0 (if an event does not occur) or 1 (if the incident occurred). Logistic regression approach similar to multiple regression but the difference is in direct logistic regression predicting the probability of occurrence of an event. Logistic regression using the assumption of the relationship between independent variables and the dependent variable as the curve S. On the value of the independent variables are very low, the probability approaches zero, while the independent variables are very high, approaching a dependent variable (asymptotic) (Hair, 1998).
Probability equations in logit model :
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