PMP Exam Math — Key Formulas

The PMP exam includes math questions. Know these formulas cold.

Earned Value:

CV = EV − AC (Cost Variance)

SV = EV − PV (Schedule Variance)

CPI = EV/AC (Cost Performance Index)

SPI = EV/PV (Schedule Performance Index)

EAC = BAC/CPI (Estimate at Completion)

ETC = EAC − AC (Estimate to Complete)

TCPI = (BAC−EV)/(BAC−AC) (To Complete Performance Index)

Communication channels:

n(n−1)/2 where n = stakeholders

PERT (3-point estimate):

(O + 4M + P) / 6 (weighted average)

Standard Deviation = (P − O) / 6

Float:

Total Float = LS − ES = LF − EF

Present Value:

PV = FV / (1+r)^n

Point of Total Assumption (FPIF contracts):

PTA = [(Ceiling Price − Target Price)/Buyer's Share Ratio] + Target Cost

Contract incentive fee (CPIF):

Actual fee = Target fee + [(Target cost − Actual cost) × Share ratio]

Reference:

Wikipedia: Earned Value

https://en.wikipedia.org/wiki/Earned_value_management