Using the greatest possible method with a suggested weight to estimate the effect of some pollutants on the Tigris River- City of Kut

Abstract

The aim of this research is to use the method of pruning immunity, as often the analysis
of the greatest potential (ML) completely fails if there are abnormal values in the
phenomenon studied. MLE will lose its properties because of the bad effect of the outliers
on the studied phenomenon. Acceptability and optimization, however, weights can be
used that increase the efficiency of the resulting capabilities and increase the power of
estimation using the MWTL. In order to achieve this research, it was necessary to detect
and investigate the impact of pollution of the Tigris River water in Kut city due to
wastewater, especially pollution with water insoluble solids (TDS) as a response variable
and the effect of three pollutants (PO4, CL, SO4) as illustrative variables. This was
presented by statistical research and evaluated accurately and submitted to the competent
authorities, where a sample size (91) was withdrawn and examined in the laboratory of
the Directorate of sewage in the city of Kut and the analysis was conducted using the
program MATLAB-2015)). The differentiation criterion was the RMSE.