يعد أنموذج الانحدار اللوجستي من نماذج الانحدار المهمة، حيث يلقى اهتماماً واضحاً في معظم الدراسات التي تأخذ طابعاً اكثر تقدماً في عملية التحليل الاحصائي. أن طرائق التقدير الاعتيادية تفشل في التعامل مع البيانات التي تتضمن وجود القيم الشاذة حيث أن لها تأثير غير مرغوب على النتائج. سنستعرض في هذا البحث طرائق لتقدير معلمات انموذج الانحدار اللوجستي وهذه الطرائق هي: طريقة مقدر لابلاس (Laplace estimator) (LP-) وطريقة مقدر هوبر الحصين (Huber estimator) (H) . اذ تم اجراء المقارنة بين هاتين الطريقتين من خلال أسلوب المحاكاة وبأستعمال معيار المقارنة متوسط مربعات الخطأ (MSE) بنسب مختلفة من التلوث ولحجوم عينات مختلفة للوصول الى الطريقة الأفضل في تقدير المعلمات. واتضح من خلال المقارنة أن طريقة (H) هي الأفضل في تقدير معلمات أنموذج الانحدار اللوجستي .
الحقوق والحريات السياسية " دراسة مقارنة بين المواثيق الدولية والشريعة الاسلامية"
The study aims to discuss the relation between imported inflation and international trade of Iraqi economy for the period (1990-2015) by using annual data. To achieve the study aim, statistical and Econometrics methods are used through NARDL model to explain non-linear relation because it’s a model assigned to measure non-linear relations and as we know most economic relations are non-linear, beside explaining positive and negative effects of imported inflation, and to reach the research aim deductive approach was adopted through using descriptive method to describe and determine phenomenon. Beside the inductive approach by g statistical and standard tools to get the standard model explains the
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- Identifying level of social enhancement for the kindergarten teachers via the test of the following hypothesis:-
Abstract
The method binery logistic regression and linear discrimint function of the most important statistical methods used in the classification and prediction when the data of the kind of binery (0,1) you can not use the normal regression therefore resort to binary logistic regression and linear discriminant function in the case of two group in the case of a Multicollinearity problem between the data (the data containing high correlation) It became not possible to use binary logistic regression and linear discriminant function, to solve this problem, we resort to Partial least square regression.
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The methods of the Principal Components and Partial Least Squares can be regard very important methods in the regression analysis, whe
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