Basic_pmp_formulas.ppt
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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.
=
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.
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