Intro to Project Management: Project Cost Management - Earned Value Management, EVM Definitions and Calculations

What This Is

Earned Value Management (EVM) is a project performance measurement technique that helps project managers track progress, identify issues, and make informed decisions. It's like having a dashboard for your project, showing how well you're doing against your budget and schedule. Imagine building a new highway: EVM helps you see if you're on track to finish on time and within budget, so you can adjust your plan if needed.

Key Terms & Formulas

• Earned Value (EV): The value of work completed, calculated as a percentage of the Budget at Completion (BAC).
• Budget at Completion (BAC): The total budget allocated to the project.
• Actual Cost (AC): The total cost incurred to date.
• Planned Value (PV): The budgeted cost of work scheduled to be completed.
• Cost Variance (CV): EV - AC, indicating if the project is under or over budget.
• Schedule Variance (SV): EV - PV, indicating if the project is ahead or behind schedule.
• Cost Performance Index (CPI): EV / AC, indicating how efficiently the project is using resources.
• Schedule Performance Index (SPI): EV / PV, indicating how efficiently the project is completing work.
• Earned Value Management (EVM) Formula: EV = % complete × BAC
• Cost Variance Formula: CV = EV - AC
• Schedule Variance Formula: SV = EV - PV
• Cost Performance Index Formula: CPI = EV / AC
• Schedule Performance Index Formula: SPI = EV / PV

Step-by-Step / Process Flow

1. Establish a Baseline: Set a realistic budget and schedule for the project.
2. Track Progress: Regularly update the Earned Value (EV) and Actual Cost (AC) to reflect work completed.
3. Calculate Performance Metrics: Use the EV, AC, and BAC to calculate Cost Variance (CV), Schedule Variance (SV), Cost Performance Index (CPI), and Schedule Performance Index (SPI).
4. Analyze Performance: Review the performance metrics to identify areas for improvement.
5. Adjust the Plan: Based on the analysis, make adjustments to the project plan to get back on track.

Common Mistakes

• Mistake: Assuming Earned Value (EV) is the same as Actual Cost (AC).
• Correction: EV represents the value of work completed, while AC represents the total cost incurred.
• Mistake: Failing to update the Earned Value (EV) regularly.
• Correction: Regular updates ensure accurate performance metrics and timely adjustments.
• Mistake: Ignoring Cost Variance (CV) and Schedule Variance (SV).
• Correction: These metrics help identify areas for improvement and inform decision-making.

Exam Tips

• Tip: Be careful with the terms "Cost Variance" and "Schedule Variance" – they're often confused, but CV indicates budget issues, while SV indicates schedule issues.
• Tip: Remember that Earned Value (EV) is a percentage of the Budget at Completion (BAC), not a dollar amount.
• Tip: Don't confuse Cost Performance Index (CPI) with Schedule Performance Index (SPI) – CPI indicates resource efficiency, while SPI indicates work completion efficiency.

Quick Practice Questions

1. If the CPI is 0.8, is the project under or over budget? Answer: Under budget. Explanation: A CPI of 0.8 indicates that the project is using resources efficiently, meaning it's under budget.
2. If the EV is $100,000 and the AC is $120,000, what is the Cost Variance (CV)? Answer: -$20,000. Explanation: CV = EV - AC = $100,000 - $120,000 = -$20,000, indicating the project is over budget.
3. If the EV is $80,000 and the PV is $100,000, what is the Schedule Variance (SV)? Answer: -$20,000. Explanation: SV = EV - PV = $80,000 - $100,000 = -$20,000, indicating the project is behind schedule.

Last-Minute Cram Sheet

• Earned Value (EV) = % complete × BAC
• Budget at Completion (BAC) = Total budget allocated to the project
• Actual Cost (AC) = Total cost incurred to date
• Planned Value (PV) = Budgeted cost of work scheduled to be completed
• Cost Variance (CV) = EV - AC
• Schedule Variance (SV) = EV - PV
• Cost Performance Index (CPI) = EV / AC
• Schedule Performance Index (SPI) = EV / PV
• Earned Value (EV) is not the same as Actual Cost (AC)
• Cost Variance (CV) indicates budget issues, while Schedule Variance (SV) indicates schedule issues
• CPI indicates resource efficiency, while SPI indicates work completion efficiency