1.1本指南推荐了处理建筑投资项目经济分析输入值不确定性的技术。它还推荐了评估项目经济结果低于预期或预期的风险的技术。 1.2技术包括盈亏平衡分析、敏感性分析、风险调整贴现、均值-方差标准和变异系数、决策分析和模拟。 1.3该技术可与衡量经济绩效的经济方法一起使用，如寿命周期成本分析、净效益、效益- 成本比、内部回报率和回报率。

1.1 This guide recommends techniques for treating uncertainty in input values to an economic analysis of a building investment project. It also recommends techniques for evaluating the risk that a project will have a less favorable economic outcome than what is desired or expected. 1.2 The techniques include breakeven analysis, sensitivity analysis, risk-adjusted discounting, the mean-variance criterion and coefficient of variation, decision analysis, and simulation. 1.3 The techniques can be used with economic methods that measure economic performance, such as life-cycle cost analysis, net benefits, the benefit-to-cost ratio, internal rate of return, and payback.