Check These Before Going to Exam

# Check These Before Going to Exam

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Formulas:

PERT = (O+4M+P) / 6

STD of Activity (STD) = (P-O)/6

Variance of Activity = [STD]2 = [(P-O)/6] 2

STD of Project = √var1 + var2 +…

Project Duration = Sum of PERTs } (#of sigma’s * STD of project)

Normal Distribution

1 sigma = 68.26% 1 STD=1 Sigma

2 sigma = 95.46%

3 sigma = 99.73%

6 sigma = 99.999%

Float/Slack of Task-X = [Critical Path Length] – [Longest Non-Critical Path that has Task-X in it]

Late Start (LS) = Early Start + Task ‘X’ Float ; Late Finish (LF) = Early Finish + Task ‘X’ Float

EVM

EV = % complete * BAC

CV = EV – AC (>0 good)

SV = EV – PV (>0 good)

CPI = EV/AC (>1 good)

SPI = EV/PV (>1 good)

EAC = AC / %Comp., BAC/CPI

ETC = EAC – AC

VAC = BAC – EAC

Incentive Contract Calculations

Variance = Target Cost— Actual Cost

(Resultant value is ‘+’ then it is Under Run, if it is ‘-’ then it is Over Run)

Resultant Profit = Target Profit + Contractor share of variance

Total Amount To Be Paid = Actual Cost + Resultant Profit

ROM = -50% to 100% during initiation stage

Budget = -10% to 25% during early planning stage and

-5% to 10% during late planning state

Communication

Channels = N (N-1)/2

Present Value : FV/ (1+r ) n

FV=Future Value; r=Rate of interest; n = number of time periods

EMV = Impact * Probability

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