Axtell R L
Center on Social and Economic Dynamics, The Brookings Institution, 1775 Massachusetts Avenue, NW, Washington, DC 20036, USA.
Science. 2001 Sep 7;293(5536):1818-20. doi: 10.1126/science.1062081.
Analyses of firm sizes have historically used data that included limited samples of small firms, data typically described by lognormal distributions. Using data on the entire population of tax-paying firms in the United States, I show here that the Zipf distribution characterizes firm sizes: the probability a firm is larger than size s is inversely proportional to s. These results hold for data from multiple years and for various definitions of firm size.
对企业规模的分析历来使用的数据包含小公司的有限样本，这些数据通常用对数正态分布来描述。利用美国所有纳税企业的数据，我在此表明齐普夫分布刻画了企业规模：一家企业规模大于s的概率与s成反比。这些结果适用于多年的数据以及企业规模的各种定义。
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