Aggregation over Firms under Mean Scaling
分析在均值缩放假设下企业层面的加总问题，即微观变量的相对分布独立于总量分布。通过成本最小化模型，证明均值缩放使总量关系继承微观行为特性，并用加拿大曼尼托巴省小麦生产的年度时间序列数据检验该假设未被拒绝。
Abstract This paper analyzes aggregation over firms assuming mean scaling, i.e., the relative distribution of micro variables is independent of the distribution of the aggregates. We emphasize cost‐minimization models encompassing general functional forms and heterogeneity of outputs and technology across firms. Mean scaling implies that aggregate relations inherit properties of micro behavior. The mean scaling hypothesis is not rejected using annual time‐series data on wheat production for crop districts in Manitoba.