"This document provides a concise list of essential formulas, including their names and examples of calculations. It features all Earned Value Management (EVM) formulas, with detailed explanations on what each formula measures and how to interpret the results. While understanding general Project Ma...
Three-point estimates: (O+R (4) +P) / 6 = ((Optimistic Estimate + Ex.: O = 2 days. R= 4 days, P = 12 days, then
a) PERT (Program (or Project) (4 x Realistic) + Pessimistic Estimate))/ 6 PERT= (2+(4x4) +12)/6 = 5 days
Evaluation and Review Technique)
b) Standard Deviation (means range) (P-O)/6 (12-2)/6 = 1.7 days
Means the project will take 5 +/- 1.7 days
c) Triangle Distribution (average) (O+R+P)/3 = ((Optimistic Estimate + (2 + 4 + 12)/3=6 days
Realistic + Pessimistic Estimate))/3
Critical Path (the longest path)
Lack/float/total float (# of days that an Late Start (LS) – Early Start (ES) = LS – ES
activity could be delayed without causing Or
delay of the project) Late Finish (LF) – Early Finish (EF) = LF -
EF
Free float (# of days that an activity could ES (of the next activity) – EF (current
be delayed without causing delay of the activity) - 1
next activity)
Forward Path (Mon to Fri) ES + Duration of the activity -1 = EF
Backward path (Fri to Mon) LF – Duration +1 = LS
Communication channels n* (n-1)/2 Ex: 10 stakeholders in the project, then
n= number of people in the project 10 * (10 – 1) /2 = 45 communication channels
between them.
Expected Monetary Value (EMV) EMV= Risk cost x Probability of the risk Ex.: cost of a new constructed house is 1,000. Risk
cost is 400, risk probability – 25 %.
Total cost of the risk Total cost of the risk = Initial cost + EMV Then, EMV: 400 x 0.25 = 100
Total cost of the risk: 1000 (cost of a new
constructed house) + 100 (EMV)= 1,100
Agile project Work in progress (WIP) / Throughput Ex. What would be the cycle time of feature A, if it
Cycle time requires 60 points of work and the team can
Note: Throughput = Amount of work that complete 5 points per day?
can done in a time period
Cycle time of A = 60/5 points per day = 12 days
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