Studying composite demand using scanner data: the case of ground beef in the US
测试了碎牛肉产品的加总有效性，并估计了复合需求弹性，发现按瘦肉比例或品牌类型分组能可靠反映消费者实际购买行为，为政策制定者评估农业政策对消费者和生产者的影响提供依据。
Abstract This article reports tests of aggregation over elementary ground beef products and estimates composite demand elasticities. Results suggest that we obtain reliable information on consumers’ actual ground beef purchases by grouping data according to either lean percentage or brand type. The results also suggest that we obtain reliable information by using the data to form a single ground beef composite. By testing for valid aggregates and providing estimates of composite demand elasticities the analysis provides economists and policymakers with information regarding the effects of food and agricultural policies on consumers and producers that buy and produce ground beef.