V2EX cost variance

Cost Variance

Definition / 定义

Cost variance(成本差异):指实际成本与计划/预算成本之间的差额,用来衡量成本是否超支或节约。项目管理中常用公式为:CV = EV AC(挣值 实际成本)。(在其他语境下也可泛指“成本偏差/成本差额”。)

Pronunciation / 发音

/kst vrins/(英式常见)
/kst vrins/(美式常见)

Examples / 例句

Our cost variance is negative this month.
我们这个月的成本差异为负数(表示超支)。

After updating the earned value report, the project showed a cost variance of $25,000, suggesting the team was spending more than planned despite steady progress.
在更新挣值报告后,项目显示成本差异为25,000美元,这表明尽管进度稳定,团队的花费仍高于计划。

Etymology / 词源

cost 源自古法语 coste/coust(费用、代价),进一步可追溯到拉丁语 constare(“站在一起/合计为”,引申为“成本为多少”)。
variance 来自拉丁语 variare(改变、变动),表示“变化程度/偏离”。合起来 cost variance 字面即“成本的偏离/变动”,在管理语境中特指与预算或标准成本的差额。

Related Words / 相关词

Literary Works / 文学与著作例证

  • *A Guide to the Project Management Body of Knowledge (PMBOK Guide)*(项目管理协会 PMI):在挣值管理(EVM)相关章节中使用并定义 **cost variance (CV)**。
  • Practice Standard for Earned Value Management(PMI):系统讨论 cost variance、CPI 等指标在项目控制中的应用。
  • Harold Kerzner, Project Management: A Systems Approach to Planning, Scheduling, and Controlling:在项目绩效测量与成本控制部分频繁出现该术语。
  • Horngren 等,Cost Accounting: A Managerial Emphasis(成本会计教材):在差异分析(variance analysis)框架下讨论与成本差异相关的概念与方法。
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