The Analysis of Geographic Living-Cost Differentials: A Brief Empirical Note
这篇简短论文研究了美国地理生活成本差异的决定因素，重点处理异方差性和多重共线性两个统计问题，对区域经济学者有参考价值。
The determinants of geographic livingcost differentials in the United States have been examined extensively (cf. Cebula 1980; Cobas 1978; Grady 1981; Haworth and Rasmussen 1973; Hogan 1983, 1984; Izraeli 1977; Langston, Rasmussen, and Simmons 1985; McMahon and Melton 1978; Ostrosky 1983, 1986). This brief note seeks to add to this literature by addressing two statistical issues: heteroskedasticity and multicollinearity.