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Top-Down (Macro) • Analogous estimating • Parametric estimating • Learning curves • Function point analysis
| Date post: | 15-Jan-2017 |
| Category: |
Engineering |
| Upload: | j-scott-christianson |
| View: | 56 times |
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Top-Down (Macro)
• Analogous estimating • Parametric estimating • Learning curves • Function point
analysis
Top-Down (Macro)
Analogous estimating
Analogous estimating involves comparing a proposed project to a similar past project to estimate the duration or cost
Top-Down (Macro)
Analogous estimating
Top-Down (Macro)
Analogous estimating
Top-Down (Macro)
Analogous estimating
Top-Down (Macro)
Parametric estimating
Parametric estimating involves calculating our estimates based on industry benchmarks.
Top-Down (Macro)Parametric estimating
2500 ft2 costs $100,000 or $40 per ft2
Top-Down (Macro)Parametric estimating
Estimate for a 2000 ft2 House: $40.00 per ft2 X 2000 = $80,000
Top-Down (Macro)
http://www.reedconstructiondata.com/
Top-Down (Macro)
Learning Curves
The more times a task has been performed, the less time will be required on each subsequent iteration.
Learning CurvesTi
me
to C
ompl
ete
0
25
50
75
100
Number of Units Produced
100 150 200 250 300 350 400
Top-Down (Macro)
Top-Down (Macro)
Function Point AnalysisA function point is the amount of functionality of an information system (as a product). Function points measure software size.
Function Point AnalysisData Functions
Internal Logical Files External Interface Files
Transactional Functions External Inputs
External Outputs External Inquiries
Top-Down (Macro)
Function Point AnalysisCategory Number Complexity Sub-Total
EI 3 3 9EO 4 7 28EQ 2 4 8ILF 5 7 35
TOTAL 80
If one function point is an equivalent of eight hours of work in C++ language, then
our project will take (80*8)=640 hours
Top-Down (Macro)
Time and Resource EstimationTop-Down (Macro)
Activity A
Activity B
Activity C
Activity D
Activity E
Activity F
Bottom-up (Micro)
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