Confidence Intervals for Elasticities and Flexibilities from Linear Equations
展示了如何利用Fieller方法为线性方程中的弹性和灵活性构建精确置信区间，并通过食品价格灵活性的实证例子说明这些区间可能很宽。
Abstract Information regarding the precision of elasticity and flexibility estimates from equations linear in original variables is typically missing from empirical studies. A result due to Fieller which allows construction of exact confidence intervals for elasticities and flexibilities from such equations is demonstrated. Exact confidence intervals are not necessarily narrowest at mean levels nor are they symmetric about the point estimates of the elasticities and flexibilities. Empirical examples indicate that exact 95 percent confidence intervals for price flexibilities for food items can be quite wide.