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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 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
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
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.
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.
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.
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)
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.
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.
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.