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Formula Memorization Trick

Formula Memorization Trick. CV = EV - AC SV = EV - PV CPI = EV / AC SPI = EV / PV EAC = BAC / CPI ETC = EAC - AC VAC = BAC - EAC. When memorizing the formulas I have found it best to look for patterns. When I see the correct pattern I know the formula is correct. AC = ACWP PV = BCWS

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Formula Memorization Trick

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  1. Formula Memorization Trick CV = EV - AC SV = EV - PV CPI = EV / AC SPI = EV / PV EAC = BAC / CPI ETC = EAC - AC VAC = BAC - EAC When memorizing the formulas I have found it best to look for patterns. When I see the correct pattern I know the formula is correct. AC = ACWP PV = BCWS EV = BCWP

  2. Formula Memorization Trick CV = EV - AC SV = EV - PV CPI = EV / AC SPI = EV / PV EAC = BAC / CPI ETC = EAC - AC VAC = BAC - EAC Ok lets build this. First is to see the pattern of 2 subtractions, 3 divides, 2 subtractions

  3. Formula Memorization Trick CV= EV - AC SV= EV - PV CPI= EV / AC SPI= EV / PV EAC = BAC / CPI ETC = EAC - AC VAC = BAC - EAC Next see the pattern of Variance and Index. Cost, Schedule and Cost, Schedule.

  4. Formula Memorization Trick CV=EV- AC SV=EV- PV CPI=EV/ AC SPI=EV/ PV EAC = BAC / CPI ETC = EAC - AC VAC = BAC - EAC Next see the pattern of Earned Value (EV). This used to be BCWP.

  5. Formula Memorization Trick CV=EV-AC SV=EV-PV CPI=EV/AC SPI=EV/PV EAC = BAC / CPI ETC = EAC -AC VAC = BAC - EAC Next see the pattern of Actual Cost (AC) and Planned Value (PV) and how they alternate. Skip a line and its AC again.

  6. Formula Memorization Trick CV = EV - AC SV = EV - PV CPI = EV / AC SPI = EV / PV EAC=BAC/ CPI ETC =EAC-AC VAC =BAC-EAC Next see the pattern of Estimated at Completion (EAC). As well as Budget at Completion (BAC)

  7. Formula Memorization Trick CV = EV - AC SV = EV - PV CPI = EV / AC SPI = EV / PV EAC = BAC/CPI ETC=EAC - AC VAC=BAC - EAC Not much left. Notice that CPI is divisor of EAC so find CPI skip a line and place it at the end of EAC formula. ETC and VAC don’t really match to anything, you just have to know where they go.

  8. Formula Memorization Trick CV = EV - AC SV = EV - PV CPI = EV / AC SPI = EV / PV EAC = BAC / CPI ETC = EAC - AC VAC = BAC - EAC This may look confusing but it worked great for me and I have had others tell me it worked for them as well.

  9. Other Formulas to Know • Communication Channels: N(N-1)/2 • Pert Mean: (Pessimistic + 4*Most Likely + Optimistic) / 6 • Standard Deviation: (Pessimistic – Optimistic) / 6 • Variance: ((Pessimistic – Optimistic) / 6) squared • Present Value or PV: Future Value / (1+ rate of return) to the power of n. Where n = periods of time.

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