Typical - No variances. No variances will occur in the FUTURE. BAC/CPI(cumu)
Atypical - Variances has occured but will not occur in the FUTURE. AC + (BAC - EV)cO
Please correct me if my interpretation is wrong.
Thu, 03/21/2013 - 13:52
I presume the left hand side of your formula equations to be 'EAC = '. Am I right?
What is the 'cO' to the very end in your second formula?
Thu, 03/21/2013 - 14:50
Yes EAC. Co is some typo.
Thu, 03/21/2013 - 15:04
We shall try to understand the meaning of typical & atypical.
Typical - Some variances have occured and it is expected to continue in future too.
Atypical - Some variances have occured and it is not expected to continue in future.
EAC ‘fundamentally flawed’ = AC + ETC
EAC ‘Typical’ = BAC / CPI
EAC ‘atypical’ = AC + (BAC – EV)
EAC considering both CPI & SPI = AC + [(BAC-EV)/(CPI*SPI)]
Fri, 03/22/2013 - 08:18
true and agree to it completely.
Wed, 03/27/2013 - 23:03
As per the Abhi and Rajesh Nair cheat sheet, i could see the following formulas. For typical and atypical it is different thant what you said. Please clarify my doubts
CV = EV - AC
CPI = EV / AC
SV = EV - PV
SPI = EV / PV
EAC ‘no variances’ = BAC / CPI
EAC ‘atypical’ = AC + BAC - EV
EAC ‘typical’ = AC + ((BAC - EV) / CPI)
ETC = EAC - AC
ETC ‘atypical’ = BAC - EV
ETC ‘typical’ = (BAC - EV) / CPI
ETC ‘flawed’ = new estimate
Percent Complete = EV / BAC * 100
VAC = BAC - EAC
EV = % complete * BAC
Formula for TCPI to meet the BAC is: TCPI = (BAC-EV) / (BAC-AC)
Formula for TCPI to meet the EAC is: TCPI = (BAC – EV) / (EAC – AC)
Thu, 03/28/2013 - 10:12
EAC = AC + (BAC-EV)/CPI is the formula that was given in PMBOK guide third edition.
In fourth edition, the same formula is simplified to EAC = BAC / CPI. Both the formulae are correct.
Kindly refer this url which clearly derives the equation.
Fri, 03/29/2013 - 03:08
For everyone who has to yet give PMP Exam, Please remember all the formulas. I had so many mathematical questions in the exam and not all are straightforward. Understanding EAC and ETC is very important for exam
Mon, 03/12/2018 - 07:10
You can read the following articles to understand more about Typical and Atypical Scenarios -
Fri, 10/12/2018 - 07:45
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