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Published byJonathan Jefferson Modified about 1 year ago

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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

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

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

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

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

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

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Formula Memorization Trick 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. CV=EV-AC SV=EV-PV CPI=EV/AC SPI=EV/PV EAC=BAC/CPI ETC=EAC-AC VAC=BAC-EAC ETC and VAC don’t really match to anything, you just have to know where they go.

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

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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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