PMP考试用到的公式

1、PMP 考试用到的公式Budgeted Cost of Work Scheduled = BCWS = Planned Value = PV Budgeted Cost of Work Performed = BCWP = Earned Value = EV Actual Cost of Work Performed = ACWP = Actual Cost = AC Budget at Completion = BACEstimate at Completion = EACEstimate to Complete = ETCVariance at Completion = VACVarian

2、ce = Plan - ActualCost Variance CV = BCWP - ACWP = EV - ACSchedule Variance SV = BCWP - BCWS = EV - PVCost Performance Index CPI = BCWP / ACWP = EV / AC Schedule Performance Index SPI = BCWP / BCWS = EV / PVEstimate at Completion EAC = BAC / CPIEstimate to Completion ETC = EAC - ACWP Variance at Com

3、pletion VAC = BAC - EACCoQ = ( ( Review Efforts + Test Efforts + Training Efforts + Rework Efforts + Efforts of Prevention) / Total Efforts) x 100 %PERT =O + 4ML + P6MEAN - AverageMODE - The “ most found ” numberRANGE - Largest - Smallest Measure.MEDIUM - No in the middle or avg. of 2 middle NosSTD.

4、 DEV. OF TASKTASK VAR. = (P -O) 2= Std. Dev A 2CP STD. DEV. =2+c 2+c 2SIGMA 1= 68.262=95.463=99.736=99.99Channels of CommunicationCOMM =(N2 - N) / 2= (N x (N -1) /2P R O J E C T S E L E C T I O NPV = F V .(1+r)?FV = PV x (1+r)NPV = S ( PV + PV + PV + PV )(1+r)? (1+r)? (1+r)? (1+r)?Cash Flow = Cash I

5、nflow -Cash OutflowDiscounted Cash Flow = CF x Discount FactorARR = S Cash Flow / No. of YearsROI = (ARR / Investment) * 100 %BCR = Benefits / CostExp. Value = Probability %x Consequence $Class of EstimatesDefinitive+5%Capital Cost+10-15%Appropriation+15-25%Feasibility+25-35%Order of Magnitude +35%C

6、ontract IncentivesSavings = Target Cost -Actual CostBonus = Savings x PercentageContract Cost = Bonus + FeesTotal Cost = Actual Cost + Contract CostPV (Present Value) = BCWS (Budgeted Cost of Work Schedule)EV (Earned Value) = BCWP (Budgeted Cost of Work Performed)AC (Actual Cost) = ACWP (Actual Cost

7、 of Work Performed)CV=EV - ACCPI= EV / AC (efficiency)SV=EV - PVSPI= EV / PVETC =:BAC -EVor(BAC -EV)/ CPIEAC =AC + ETCEAC =BAC / CPIVAC =BAC - EAC% COMPLETE = EV / BAC x 100% SPENT = AC / BAC x 100SV%SV / PV x 100CV%= CV / EV x 100EASY REFERENCE TO PROJECT MANAGEMENT COST EQUA TIONSTheProject s Budg

8、et:PV:Planned Value (PreviouslyCalled BCWS:Budgeted Cost of WorkScheduled)Theplanned value is the project budgetthat is part portion of the approvedcost estimate that is planned to be spenton the activity during a givenperiod.TheProject s Actual Cost:AC:Actual Cost (PreviouslyCalled ACWP:Actual Cost

9、 of WorkPerformed)The actual cost that is thetotal of direct and indirect costs incurred in accomplishing work on theactivity during the given period.TheProject s Earned eV:aluEV:Earned Value (Previouslyand Interchangeably Called BCWP:Budgeted Cost of Work Performed)EV is the method for measuring pr

10、ojectperformance.Itcomparesthe amount of work planned with what was actually accomplishedtodetermine if cost and schedule performance is as planned.Theearned value, previously and interchangeably called the Budgeted Cost ofWork Performed (BCWP), is a percentage of the total budget equal to thework a

11、ctually performed.CostVariance:CV:Cost VarianceCV is any difference from the estimatedcost of an activity and the actual cost of that activity.In earnedvalue analysis, CV = EV -ACScheduleVariance:SV:Schedule VarianceSV is any difference from the between thescheduled completion of an activity and the

12、 actual completion of thatactivity.In earnedvalue analysis, SV = EV - PVCostPerformance Index:CPI:Cost Performance IndexCPI is the ratio of budget cost to actualcosts.In earned value analysis, CPI =(EV/AC)CumulativeCPI = (sum of all individual EV budgets / sum of all individual ACs)SchedulePerforman

13、ce Index:SPI:Schedule Performance IndexThe SPI is used in some application areasto forecast the project completion date.SPI = (EV/PV)(Sourcefor above equations:PMBOK? , Section 10.3.2.4, Publishedby the Project Management Institute (PMI), 2000 edition)Valuable Hints NOT Written in Project Management BooksAbout Costs(Ormore succinctly “ How to know you re in trouble ”)When EVis used in a cost variance equation, it always goes first:CV = EV -AC(ValuableHint:If you g