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Application of the logistic dist. Function (univariate) for studying the effect of age-variations among couples on continuity of their lifes | ||
| AL-TAQANI | ||
| Article 1, Volume 23, Issue 6, 2010, Pages 23-43 | ||
| Abstract | ||
| Logistic Function is regarded as the best one to fit the data with binary responses and multiple levels of the explanatory variable. But there are two obstacles on the way of least squares estimation for the parameters : nonlinearity of the parameters and the hetero scedasiticity of the responses – variances . If the estimation is done without overcoming the two obstacles , the estimators will be biased , non – normally distributed and having no minimum variances . In this case there is no advantage of using the logistic function . Luckily , the overcoming of the two obstacles is not difficult because the parameters of the logistic function can be easily transformed to be linear and the responses – variances to be homoscedasitic. So the logistic function is used many times in biological studies. This research is a trial to use the logistic regression function in another field, that is, social life. The researcher studied the significance of the differences in couples- age as a divorce–factor and he could determine acceptable difference range for the safety of married life . | ||
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