Models for survey nonresponse and bias adjustment techniques

Survey statisticians have been dealing with the issues of nonresponse in sample surveys for many years. Due to complex nature mechanism, so far it has not easy find a general solution this problem. In paper, several aspects topic will be elaborated on: survey unit bias examined alternatively by taking response amounts which are fixed initially and also as random variables. An overview components due performed. Nonresponse illustrated each alternative approach amount was computed case.