Recently, I took PMP certification. I'm posting the formulas that I had gathered during preparation in my personal cheat sheet, so that others preparing can benefit from it.

**Three point estimate (PERT)**=

*(to + 4tm + tp) / 6*(This applies for both cost and time) (to is optimistic estimate, tm is median estimate and tp is pessimistic estimate)

**Standard deviation**=

*(p-o)/6*(p is pessimistic and o is optimistic)

**Total standard deviation**(given other std deviations) is sqrt of the sum of the individual variances (variance is square of deviation)

**Schedule variance**:

*SV = EV - PV*(EV is Earned Value, PV is Planned Value)

(Note that SV is always 0 at the end of the project (if the project is completed))

**Cost variance**:

*CV = EV - AC*(AC is Actual Cost)

(CV at the end of the project is AC - BAC) (BAC is Budget At Completion)

(Both SV and CV should be positive. Negative schedule and cost variance means project is behind schedule and over budget respectively)

**Schedule Performance Index**:

*SPI = EV/PV*

**Cost Performance Index**:

*CPI= EV/AC*

(Both SPI and CPI should be greater than 1. Schedule and cost performance index less than 1 means project is behind schedule and over budget respectively)

**Burn rate**=*AC / EV = 1/CPI***Forecasting**: (Estimate at completion - EAC)

*EAC = AC + bottom up ETC*(ETC is Estimate To Complete)

*EAC = AC + (BAC - EV)*- This is applicable if remaining work is estimate to continue at budgeted rate

*EAC = BAC / CPI*- This is applicable if remaining work continues at current cost

*EAC = AC + ((BAC - EV)/ (CPI x SPI))*- This is considering both SPI and CPI

**Variance at completion**:

*VAC = BAC - EAC*

**Total Cost to Performance Index (TCPI)**:

*TCPI based on BAC =*

*(BAC - EV)/(BAC - AC)*

*TCPI based on EAC = (BAC - EV)/(EAC - AC)*(Ratio of remaining work to funds remaining)

**Expected Monetary Value**:

*EMV = Probability X Impact (Cost)*

**Present Value:**

*PV = FV / ((1+r) to the power of n)*(FV is future value)

## 34 comments:

THanks Raja. This is very useful..

Raja, you are the man, thank you!

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Thank you,your information is very useful .PMP Chennai

Hi raja, I am doing my exam next week and I want to know if it is allowed to have you above notes with me during the exam? Thank you for your reply.

@Fares - I don't think you can take any materials or notes with you to the exam.

Hi Raja, am planning to write the PMP exam in 1st half of April. I have completed the PMBOK reading and now working on the RITA 7th edition. Do you have any specific tips or cheat sheets which can help me? Can you drop me a note at krishnak.goli@gmail.com with any info you have which can help me?

Thanks Raja, I had my own but like yours MUCH better!!!

you are simply awesome...!!!! Thank you. Niikay

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This is a great set of cheat sheets

PMPPrince2Money ManagementProject ManagementManagement TrainingWow! This is interesting information that you have shared in here. Thank you for sharing this one. pmp exam prep

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This is informative. Thank you.

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This is quite nice. you can add more

1. Communication channels = n(n-1) /2

2. PERT = (p + 4ml + o) / 6

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