480 likes | 758 Views
Training Objectives. Basic concepts of measuring performanceExamplesEVM guidelines for project executionBasic concepts of reporting progressBasic concepts of analysisExamples. Budgeted Cost for Work Performed(BCWP). . the EARNED VALUE concept. . We're at the end of the second month, but only 1 section of track is complete. Earned value of work completed = $1,000.
E N D
1. CPM 300 Principles of Earned Value ImplementationCPM 300B – Management Use of EV Data
Eleanor Haupt
Aeronautical Systems Center
eleanor.haupt@wpafb.af.mil
+1-937-656-5482
2. Training Objectives Basic concepts of measuring performance
Examples
EVM guidelines for project execution
Basic concepts of reporting progress
Basic concepts of analysis
Examples
4. General Principles of Measuring Performance (BCWP) Establish valid metrics as you establish the time phased baseline
Relate true work status
Objective and quantifiable
Should be a quantitative and discrete way to measure the work
May tie in with success criteria or technical measure
Example: successful completion of a specific test
Must be consistent in following established metric as work progresses
BCWP value drives both cost and schedule variances
If overstated or understated, it will distort variances
Can impact estimate at complete calculations
5. Discrete
Physical, tangible end product
Common techniques: milestone, % complete, 0/100, 50/50, units complete
Apportioned
Discrete, but dependent on another discrete work package
Example: quality assurance (depends on assembly labor)
Planned as historical estimating factor (e.g., 7%)
Level of Effort
No tangible end product
Basis of measurement: time
When clock starts ticking, you automatically accumulate earned value
Results in no schedule variance (BCWP will always equal BCWS)
Example: management personnel Three Basic Methods of Earning Value
6. Discrete EV Techniques:
Method How Value is Earned
0/100 no EV at opening, 100% EV at close of WP
50/50 50% EV at opening, 50% EV at close of WP
Units Completed same budget value for identical units
Equivalent Units planned unit standards, allows partial credit
Weighted Milestone each milestone weighted based on planned resources
ideal to have a milestone each month
Percent Complete should be based on some quantitative assessment
may be somewhat subjective
Be Discrete!
7. Material and Subcontracts
Earned Value: taken no earlier than receipt or progress payments to subcontractors
define
order
receipt or progress payments
payment
to inventory
usage
accurate cost accumulation and assignment to contract
should perform price and usage variances
should plan earned value to match expected payment period
BCWP and ACWP should occur in same period to avoid artificial cost variance
option: may report “estimated actuals” based on invoice Earning BCWP on Material
8. Examples of BCWP Calculations
9. Different EV Methodology Yields Different Results!
10. Example: Milestone Technique
11. Example: Level of Effort Technique
12. Example: 50/50 Technique
13. Example: Percent Complete Technique
14. Which Technique Accurately Reflects Work Progress?
Milestone SV -100 -20 +120 0
CV -50 -20 +40 -30
LOE SV 0 0 0 0
CV +50 0 -80 -30
50/50 SV 0 -160 +160 0
CV +110 -120 -20 -30
% Compl SV -40 -20 +60 0
CV +10 -20 -20 -30
15. EVM Guidelines for Project Execution
16. Work Packages
17. Can only work on work package if it has been opened
Charge costs to open work packages only
Contractor system sets procedure
Contractor maintains baseline log which tracks:
Distribution of budget
Additions of authorized work
Total equals value of contract at cost
Contract changes incorporated in disciplined manner
Cannot start work without authorization and budget
Baseline changes are controlled Authorizing the Work
19. Project Control So, your project has been baselined and work has started
Is everything going according to plan?
Next step in the process:
figure out your status
figure out the problems
figure out what you need to do to fix them
figure out what the impact might be
20. Status Reporting Report on periodic basic
weekly
monthly
Tailor the data to match how you’re managing
Provide performance reports to:
Senior management
Customer
Based on contract terms
Use data in reports and variance analysis to manage and control project
21. Contractor Reports Cost Performance Report (CPR)
Format 1: cost and schedule progress by WBS
(specified reporting level usually at level 3)
Format 2: cost and schedule progress by organization
Format 3: changes to performance measurement baseline
Format 4: manpower forecast
Format 5: variance analysis
22. Formats 1 and 2 Contents
header:
basic contract information (target, ceiling, name of contractor, etc.)
range of final estimates
body
performance data
variances
budget at completion, estimate at completion
23. Format 5 variance analysis should address:
separate discussion of CV, SV (current and cum) and VAC
clear description of reason for variance
quantity variances (e.g., price vs. usage)
be specific
discuss needed corrective action
technical, schedule, and cost impacts
impact to estimate at completion
should be written by CAM! Variance Explanations
24. Sample of Variance Analysis
25. Basic Concepts of Analysis or
figuring out where the problems are
26. Looking Forward To address management with earned value more specifically, it is important to analyze our past performance in order to help us control the future.
All too often, earned value data is seen as historical, a nice picture of where we’ve been. It is challenging work to analyze these past trends and use them to project into the future. However, every program manager should be able to answer when the project will finish, what it will cost, and understand the impacts of future risks. Using earned value data allows us to project these trends and then to take the appropriate action to control the project.
Acquiring earned value data can take a substantial amount of time and resources, and we must make effective use of it in managing our projects. Earned value is the only management tool that relates cost and schedule progress to technical progress. Earned value should not be seen as a progress report, but the integrating principle of project management.
To address management with earned value more specifically, it is important to analyze our past performance in order to help us control the future.
All too often, earned value data is seen as historical, a nice picture of where we’ve been. It is challenging work to analyze these past trends and use them to project into the future. However, every program manager should be able to answer when the project will finish, what it will cost, and understand the impacts of future risks. Using earned value data allows us to project these trends and then to take the appropriate action to control the project.
Acquiring earned value data can take a substantial amount of time and resources, and we must make effective use of it in managing our projects. Earned value is the only management tool that relates cost and schedule progress to technical progress. Earned value should not be seen as a progress report, but the integrating principle of project management.
27. Basic Analysis Techniques Find significant variances
eliminate almost complete, just starting, etc.
Graph and analyze trends
Look at comparative data
e.g. cumulative performance vs. projected performance
Examine written analysis by contractor
does it answer why?
adequacy of corrective action plans
Analysis of schedule trends, critical path
Analysis of EAC realism
28. Types of Variances Values can be expressed as either current period or cumulative
current tends to be more volatile
use cum data to show trends
Easy rule of thumb:
negative value = BAD positive value = GOOD
index < 1.0 = BAD index > 1.0 = GOOD
Absolute
expressed in terms of dollars or hours (e.g., -$1,000)
may not be able to tell significance from this amount
Percent
relates absolute variance to a base (e.g., -35%)
shows significance
Index
compares one value to another in a simple ratio
if you are on plan, index = 1.00
29. Where are the significant problems?
30. Graphing Techniques
31.
CURRENT OR CUM TO DATE
Schedule Variance SV ($) = BCWP - BCWS
SV (%) = BCWP - BCWS x 100%
BCWS
Cost Variance CV ($) = BCWP - ACWP
CV (%) = BCWP - ACWP x 100%
BCWP Analysis of Variances
32. Performance Indices
33. Past and Present Cost Efficiency The TCPI(LRE/EAC) depicts the efficiency necessary for the contractor to complete at his estimated EAC. Since we had assumed the contractor had resolved all problems it is no surprise that he only has to work at 100% to achieve his EAC. Of course, he was only working at 42%. The TCPI(LRE/EAC) depicts the efficiency necessary for the contractor to complete at his estimated EAC. Since we had assumed the contractor had resolved all problems it is no surprise that he only has to work at 100% to achieve his EAC. Of course, he was only working at 42%.
34. Schedule Status
35. Budget Status
36. Mutual Goal: Effective Variance Analysis Make it meaningful
avoid routine explanations
Make it timely
Make it streamlined
significant variances
Make it right
work with contractor to get the information we need
Get the information to the managers
Use the information to control the project
37. Estimate at Completion (EAC)
defined as actual cost to date + estimate to complete
contractor develops comprehensive EAC at least annually
reported by WBS in cost performance report
should examine on monthly basis
consider the following in EAC generation
performance to date
impact of approved corrective action plans
known/anticipated downstream problems
best estimate of the cost to complete remaining work What will be the final cost?
38. Need to Estimate Costs for Remaining Work Budgeted Cost for Work Remaining (BCWR)
Budgeted, baseline value for remaining work
Update estimate of costs for BCWR
Can be detailed estimate
Can calculate with performance factors (CPI or SPI)
Assumes performance will continue at same level of efficiency
Basic formula: BCWR / performance factor
Example:
CPI = .9
BCWR = 1,000
Estimate to complete = 1,000 / .9 = 1,111
39. Common EAC Formulas:
EAC = BAC
CPI
= ACWPcum + Budgeted Cost of Work Remaining
CPI3
= ACWPcum + Budgeted Cost of Work Remaining
.5(CPI) +.5(SPI)
= ACWPcum + Budgeted Cost of Work Remaining
CPI * SPI
Common EAC Formulas
40. Other methods of EAC calculation “Grass Roots” or formal EAC
detailed build-up from the lowest level detail
hours, rates, bill of material, etc.
Average of statistical formulae
Statistical regression
Complete schedule risk analysis for remaining work, estimate work remaining
41. Past vs. Projected Efficiency
42. Earned Value Enables Realistic Forecasts
43. The “Box of Uncertainty”(courtesy Swedish Defense Material Administration)
44. Managing with Earned Value Data
45. Program Manager Responsibilities Assign integrated responsibility to teams
Demand accountability
Ask tough questions
project office
contractor
Look ahead – manage the risks
Integrated analysis and reviews
EVMS
Integrated Master Schedule
Risk Plan
Manage to the baseline
Control statement of work growth
Lead assessment of baseline realism
Integrated Baseline Review (IBR)
Call for realistic estimates The Program Manager is the key person in making EVM work. Some of the major responsibilities are to assign responsibility to IPT subordinates, and then hold people accountable and ask tough questions. This would be true both on the government and contractor teams.
Another key responsibility is to use EVM data to identify trends and potential problems and manage program risks.
The PM is also responsible for ensuring that the EVM data ties together with the integrated master schedule, the risk plan and other management indicators. Earned value should be seen as the connecting thread between the contractor’s technical, schedule, and cost performance. The program team should fully integrate EVM analysis into program reviews.
The PM should see the EVM baseline as the plan to manage the project. Successful baseline management includes controlling growth of the SOW and assessing the baseline realism. The IBR is the initial review of the baseline, and the baseline should be reviewed continually through the life of the project.The Program Manager is the key person in making EVM work. Some of the major responsibilities are to assign responsibility to IPT subordinates, and then hold people accountable and ask tough questions. This would be true both on the government and contractor teams.
Another key responsibility is to use EVM data to identify trends and potential problems and manage program risks.
The PM is also responsible for ensuring that the EVM data ties together with the integrated master schedule, the risk plan and other management indicators. Earned value should be seen as the connecting thread between the contractor’s technical, schedule, and cost performance. The program team should fully integrate EVM analysis into program reviews.
The PM should see the EVM baseline as the plan to manage the project. Successful baseline management includes controlling growth of the SOW and assessing the baseline realism. The IBR is the initial review of the baseline, and the baseline should be reviewed continually through the life of the project.
46. Quotes from Project Managers
47. Additional Referenceshttp://www.cpm-pmi.orghttp://www.acq.osd.mil/pm
48. Summary Be careful to establish correct value for reported BCWP (earned value)
Set up and maintain system discipline
Maintain a realistic baseline
Analyze earned value data
Calculate a realistic estimate at completion
Manage with earned value data