Forward Pass

ES = EF of the predecessor node

EF = ES + Du

Backward Pass

LF = LS of the Successor

LS = LF – Du

ES Du EF

Node

LS Float LF

ES Du EF

Slack = LF – EF = LS – ES

Free Float = ES(Successor) - EF(Predecessor)

Q U A L I T Y

CoQ = ( ( Review Efforts + Test Efforts + Training Efforts + Rework Efforts + Efforts of Prevention) / Total Efforts) x 100 %

PERT = O + 4ML + P

6

MEAN  Average

MODE  The “most found” number

RANGE  Largest - Smallest Measure.

MEDIUM  No in the middle or avg. of 2 middle Nos

STD. DEV. OF TASK = P - O

6

TASK VAR. = (P – O) ² = Std. Dev ^ 2

6

____________

CP STD. DEV. = √ σ² + σ² + σ²

SIGMA 1 = 68.26

2 = 95.46

3 = 99.73

6 = 99.99

Channels of Communication
COMM = (N² - N) / 2 = (N x (N – 1)) / 2

P R O J E C T S E L E C T I O N

PV = F V .

(1+r)ⁿ

FV = PV x (1+r)

NPV =  ( PV + PV + PV + PV )

(1+r)ⁿ (1+r)ⁿ (1+r)ⁿ (1+r)ⁿ

Cash Flow = Cash Inflow – Cash Outflow

Discounted Cash Flow = CF x Discount Factor

ARR =  Cash Flow / No. of Years

ROI = (ARR / Investment) * 100 %

BCR = Benefits / Cost

Exp. Value = Probability % x Consequence $

Class of Estimates
Definitive +5%
Capital Cost +10-15%
Appropriation +15-25%
Feasibility +25-35%
Order of Magnitude > +35%

Contract Incentives
Savings = Target Cost – Actual Cost
Bonus = Savings x Percentage
Contract Cost = Bonus + Fees
Total Cost = Actual Cost + Contract Cost

E A R N E D V A L U E A N A L Y S I S

PV (Present Value) = BCWS (Budgeted Cost of Work Schedule)

EV (Earned Value) = BCWP (Budgeted Cost of Work Performed)

AC (Actual Cost) = ACWP (Actual Cost of Work Performed)

CV = EV – AC

CPI = EV / AC (efficiency)

SV = EV – PV

SPI = EV / PV

ETC = BAC – EV or (BAC – EV) / CPI

EAC = AC + ETC

EAC = BAC / CPI

VAC = BAC – EAC

% COMPLETE = EV / BAC x 100

% SPENT = AC / BAC x 100

CV% = AC / EV x 100

SV% = AC / PV x 100