المربعات الصغرى المشذبة الموزونة لتقدير تأثير مياه الصرف الصحي في تلوث مياه نهر دجلة محافظة واسط
Other Title(s)
Weighted least squares estimation of the effect of wastewater pollution of Tigris River Wasit Governorate
Joint Authors
خالد جمال كاظم
عمر عبد المحسن علي
Source
مجلة العلوم الاقتصادية و الإدارية
Issue
Vol. 24, Issue 109 (31 Dec. 2018), pp.486-495, 10 p.
Publisher
University of Baghdad College of Administration and Economics
Publication Date
2018-12-31
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Earth Sciences, Water and Environment
Topics
Abstract EN
The analysis of Least Squares: LS is often unsuccessful in the case of outliers in the studied phenomena.
OLS will lose their properties and then lose the property of Beast Linear Unbiased Estimator (BLUE), because of the Outliers have a bad effect on the phenomenon.
To address this problem, new statistical methods have been developed so that they are not easily affected by outliers.
These methods are characterized by robustness or (resistance).
The Least Trimmed Squares: LTS method was therefore a good alternative to achieving more feasible results and optimization.
However, it is possible to assume weights that take into consideration the location of the outliers in the data and determine them accurately.
In order to increase the Weighted Least Trimmed Squares: WLTS, the weight of the sample data on the estimation is repeated.
In order to perform this research, the need for detection and investigation of the impact of pollution of the Tigris River in Wasit Governorate has been called for by wastewater, particularly Total Dissolved Solids: TDS as dependent variable, and the impact of three covariates Sulfates: SO4, Chloride: Cl and Phosphate: PO4 pollutants.
The evaluation was done in in a precise manner and submitted to the competent authorities.
In order to achieve this objective, a sample of (91) positions were drawn and checked in the laboratories of Wasit Governorate
American Psychological Association (APA)
عمر عبد المحسن علي وخالد جمال كاظم. 2018. المربعات الصغرى المشذبة الموزونة لتقدير تأثير مياه الصرف الصحي في تلوث مياه نهر دجلة محافظة واسط. مجلة العلوم الاقتصادية و الإدارية،مج. 24، ع. 109، ص ص. 486-495.
https://search.emarefa.net/detail/BIM-866207
Modern Language Association (MLA)
عمر عبد المحسن علي وخالد جمال كاظم. المربعات الصغرى المشذبة الموزونة لتقدير تأثير مياه الصرف الصحي في تلوث مياه نهر دجلة محافظة واسط. مجلة العلوم الاقتصادية و الإدارية مج. 24، ع. 109 (2018)، ص ص. 486-495.
https://search.emarefa.net/detail/BIM-866207
American Medical Association (AMA)
عمر عبد المحسن علي وخالد جمال كاظم. المربعات الصغرى المشذبة الموزونة لتقدير تأثير مياه الصرف الصحي في تلوث مياه نهر دجلة محافظة واسط. مجلة العلوم الاقتصادية و الإدارية. 2018. مج. 24، ع. 109، ص ص. 486-495.
https://search.emarefa.net/detail/BIM-866207
Data Type
Journal Articles
Language
Arabic
Notes
يتضمن مراجع ببليوجرافية : ص. 494
Record ID
BIM-866207