Mr. Deaton used household surveys to collect detailed information about how families spend their money. For example in one study, the Princeton professor examined the relationship between poverty and the amount of calories in the food people ate.________________________迪顿先生利用家庭数据调查收集各个家庭如何消费的详细信息.比如在一项调查中,这位普林斯顿大学教授测试了贫困和人们饮食的热量间的联系.______________________
