Formulas - Earned Value
  • ACWP/AC = The actual cost of work performed to date or for a given time period.
  • BCWS/PV = Known in advance; Budgeted cost of work scheduled during a given time period.
  • BCWP/EV = How much work got done.
  • EAC = Estimate at completion is the expected cost of work when completed.
  • ETC = Estimate to complete is the additional budget or costs needed to complete the activity or project if everything continues at current levels of performance.
  • BAC = Budget at completion is the remaining budget less the work that's been done to date.
  • CV = EV - AC
  • SV = EV - PV
  • CPI = EV / AC
  • SPI = EV / PV
  • EAC = AC + ETC
  •  - Use when past assumptions are incorrect
  • EAC = (AC + BAC) - EV
  •  - Use when variances are not typical or are not expected to continue
  • EAC = AC + ((BAC - EV)/CPI)
  •  - Use when variances are expected to remain the same
  • ETC = EAC - AC
  • VAC = BAC - EAC


  • Formulas - Communication Channel Amount
  • (n*(n-1))/2


  • Formulas - Project Selection
  • FV = PV*((1 + i) ^ n); i = interest rate; n = number of periods
  • NPV = (Summartion of the PV of future project cash inflows) - (Project Investment). When only considering the monetary aspect, the highest NPV wins.
  • NPV assumes cash inflows are reinvested at the cost of capital rate.
  • IRR is the discount rate when NPV is zero.
  • Project with a higher IRR are generally considered better.


  • Formulas - Expected Monetary Value
  • EMV = The average or expected monetary outcome of a decision if it can be repeated many times. This is determined by multiplying the monetary outcomes by their respective probabilities. The results are then added to arrive at the EMV.


  • Program Evaluation and Review Technique
  • PERT Estimating = (Pessimistic + 4*(Most Likely) + Optimistic)/6
  • PERT Standard Deviation = (High Estimate - Low Estimate)/6