Experimental Survey Roterdam Demand System By Using Urban Family Of Consumer Costs Data Case Study: Province Of Sistan and Balouchestan, Iran

Consumer demand system expresses how consumers allocate their income among various products. These models are usually based on microeconomic theory which considers the demand side and neglects the supply side. In other words, the demand-supply analysis is independent. In this research, firstly, the characteristics of consumer demand and the demand function extraction methods are discussed and finally, using data from the spending of urban households in Sistan and Blouchstan both bound and unbound Rotterdam demand system is estimated. The results show that the 2 states of theory of the demand is true for goods groups and to determine the Rotterdam demand system consistent with the theory or not, homogeneity and symmetry constraints of the parent test, are tried. The results indicated that the homogeneity and symmetry in Rotterdam demand system is provided.