Type: Rules
Gist
Calculate Effort from # of Function Points, for Enhancements
Rules and Notes
R1: The Capers Jones Formula for Effort E of new Products (in person months):
(1)
R2: Enhancements of products cannot be calculated with the same formula, as you need to take into account that you add complexity to an existing product.
R3: Formula for the needed EnhancementEffort EE for an Enhancement of y function points to a a base product of x function points:
(2)
EE = E(x+y) - E(x)
Note: Obviously you need to know y and x. The greater x is, the more significant is the difference between E and EE.
Costs, Savings
What does it take to implement those rules? What does it give?
Side effects
Is there anything that happend or will happen as one implements the rules? This relates to both wanted and unwanted effects ('unwanted' does not imply 'negative').
Related Pages
- 11 rules for prioritizing features
- lean product development
- how to state the credibility of estimations
- 10 Deadly Sins of Estimation (on Seer)
- Excellent Material on Professional Estimation (on Gilb website)
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