成本偏差是指一项活动的预算成本与该活动的实际成本之间的差额，在挣值中，成本偏差（CV）=挣值（EV）-实际成本（AC）。
世界银行采用购买力平价法来矫正劳动力成本偏差。
The World Bank adopts purchasing power parity(ppp)measure to correct the balance of labor cost.
研究结论：挣值法可运用于土地开发整理工程成本偏差分析。
The paper concludes that earned value method can be applied in the analysis of the total cost variance in land development and consolidation projects.
本文结合光电大厦项目探讨利用帕累托图寻求成本偏差的主要影响因素，并对主要因素的影响进行控制的方法。
Based on GuangDian building project, this paper discusses using the Pareto chart to seek major effective factors of cost differences and the method of controlling primary effect factor.
应用推荐