短語詞組短語representativeness heuristics 代表性啟發(fā)式;代表性啟發(fā)法;代表一性一啟發(fā)法trade representativeness 行業(yè)代表性sampling representativeness 采樣代表性representativeness analysis 代表性分析spatial representativeness 空間代表性objective representativeness 類別內(nèi)代表性typical representativeness 典型代表性non representativeness 無代表性 返回 representativeness