المؤلفون
1 Assistant Lecturer of Statistics, Faculty of commerce, Girls’ Branch Cairo, Al-Azhar University
2 Professor of Statistics Faculty of Economics and Political Science Cairo University
3 Statistics Dept, Faculty of Commerce, Al-Azhar University, Girls’ Branch, Cairo, Egypt
4 Assistant Professor of Statistics Faculty of Commerce, Girls’ Branch Cairo Al-Azhar University
المستخلص
الكلمات الرئيسية