Choose the best estimation Methods for the multi – response dependent Variable .

Abstract

The descriptive dependent variables are important one that do not have quantitative measurement units, they subject to the description of the phenomenon through studying the data and information, and enables the decision–maker to identifying the nature of response when the variable is binary–response or multi–response .We used in our thesis the descriptive regression model, when the dependent variable is multi–response, by studying some models related to these descriptive variables. was estimation the parameter of model of dependent variable, using "weighted least squares"method, and method of " maximum likelihood ", and "Jackknife estimation" methods. was applied to the life experience of some insecticidal in , we found the result of estimation is that the (MLE) method is the best and efficient because it gets less (MSE).