The majority of econometric models follow a time series,single equation approach whereas in a more adwanced context  a number of demand systems is also estimated .In the first case , the dependant variable ( usually the number of arrivals in a particular destination) is regressed on the tourist's disposable income and a group of cost factors for the examined area and its competitors ,such as prices of local tourist products ,exchange rates ,and transportation costs.In some occasions  dummy  variables are introduced to pick up the effect of special events .Moreover ,the inclusion of lagged variable or of a time trend captures dynaminc elements unless these are explicitly modeled.

多数计量经济模型跟随时间数列，单一方程方法，而在更多adwanced上下文一定数量的需求系统也估计。在第一个案件， 因变量(通常数字到来在一个特殊目的地)在游人的可用收入和一个小组退步成本因素为被审查的区域和它的竞争者，例如地方旅游产品的价格，交换率，并且运输费用。在有些场合介绍假设变量拾起特殊事件的时刻的作用。而且，除非这些明确地被塑造，滞后的可变物包括或时间趋向夺取dynaminc元素。