Management Metrics(2) 4. Parkinson 's Law: Work expands to fill the time available Cost is determined by available resources If software has to be developed in 12 months and you have 5 people available, then effort required is estimated to be 60 person months 5. Pricing to win estimated effort based on customer' s budget 6. Top-down estimation: cost estimate made by considering overall function and how functionality provided by interacting sub-functions Made on basis of logical function rather than the components implementing that function 7. Bottom-up function: cost of each component estimated and then added to produce final cost estimateManagement Metrics (2) 4. Parkinson’s Law: Work expands to fill the time available. Cost is determined by available resources If software has to be developed in 12 months and you have 5 people available, then effort required is estimated to be 60 person months. 5. Pricing to win: estimated effort based on customer’s budget. 6. Top-down estimation: cost estimate made by considering overall function and how functionality provided by interacting sub-functions. Made on basis of logical function rather than the components implementing that function. 7. Bottom-up function: cost of each component estimated and then added to produce final cost estimate. �