Study of production and marketing dates in Iraq Using the lower squares method And linear scripting

Zeena Mien Mohammed, M.; Ziad Zaki Saleh, M.

	Study of production and marketing dates in Iraq Using the lower squares method And linear scripting
Journal of Administration and Economics
Article 1, Volume 0, Issue 92, 2018, Pages 321-336
Authors
M. Zeena Mien Mohammed; M. Ziad Zaki Saleh
Abstract
In this research we got with using One of the manners Linear Programming which is called the Simplex Method for parameters estimation to Linear Regression Model, through the way of choosing the objective function which works on minimization to the lower bound for the summation of errors which came from parameters estimation by Ordinary Least Square Method, therefore it will be done in the Simplex Method by assuming constraints on the same errors in objectives of minimizing it to least what could be to obtain the best estimation for parameters of Linear Regression Model .  عبٍؼخ ثغذاد/ميٞخ اىضساػخ / ٗحذح اىحبعجبد .  عبٍؼخ ثغذاد / شؼجخ اىؼق٘د اىحنٍ٘ٞخ . ٍقج٘ه ىيْهش ثزبسٝخ 03/11/1311 2012 The magazine of Economics & Administration (322) Basically the Ordinary Least Square Method is and attempt to estimate the parameters of Linear Regression Model by the way of minimizing the sum of squares for errors to least what could be for obtaining the best estimation to these parameters . By using of an empirical simulation approach to generate data that will be assumed from Linear Regression Model and for (100) samples, the comparison was done between the results for parameters estimation by method of Ordinary Least Square and the results of the Simplex Method to minimizing the sum of errors by putting constraints on these errors. Moreover in our research we can conclude that the usage of the Simplex Method can be shown the best results for parameters estimating of Linear Regression Model from using Ordinary Least Square Method, within different cases which has been shown in simulation part. This research includes on the subject of timing trends analyzing by using the Simplex Method for production and export of dates in Iraq because this crop is very important in economical studies as results of the important relationship with the food security issue.
Keywords
Statistical axis

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