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)

## 15 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

wonderful information, I had come to know about your blog from my friend nandu , hyderabad,i have read atleast 7 posts of yours by now, and let me tell you, your website gives the best and the most interesting information. This is just the kind of information that i had been looking for, i'm already your rss reader now and i would regularly watch out for the new posts, once again hats off to you! Thanks a ton once again, Regards, PMP online trainingamong the PMP in Hyderabad. Classroom Training in Hyderabad India

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

I’ve been looking for this. I am glad that I’ve finally found it. Thank you for posting this information. pmp online training

This is informative. Thank you.

pmp certification

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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