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3.1 Tracking Progress : Gantt Chart

3.1 Tracking Progress : Gantt Chart. Activities shown in parallel. 3.1 Tracking Progress Phases, Steps, and Activities in Building a House. 3.3 Effort Estimation Estimation Should be Done Repeatedly. Uncertainty affects the accuracy of cost and size estimations.

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3.1 Tracking Progress : Gantt Chart

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  1. 3.1 Tracking Progress: Gantt Chart • Activities shown in parallel

  2. 3.1 Tracking ProgressPhases, Steps, and Activities in Building a House

  3. 3.3 Effort EstimationEstimation Should be Done Repeatedly • Uncertainty affects the accuracy of cost and size estimations

  4. 3.3 Effort Estimation Watson and Felix Model Productivity Factors

  5. Three Stages of COCOMO II

  6. 3.3 Effort Estimation COCOMO II: Estimate Application Points For Screens For Reports Number and source of data tables Number and source of data tables Number of Total < 4 Total < 8 Total 8+ Number of Total < 4 Total < 8 Total 8+ views (<2 (2-3 (>3 sections (<2 (2-3 (>3 contained server, server, server, >5 contained server, server, 3- server, 3-5 client) 5 client) >5 <3 <3 client) client) client) client) <3 simple simple medium 0 or 1 simple simple medium 3 - 7 simple medium difficult 2 or 3 simple medium difficult 8 + medium difficult difficult 4 + medium difficult difficult • To compute application points count the number of screens, reports, and programming language used, and determine the complexity level

  7. 3.3 Effort EstimationComplexity Weights for Application Points Object type Simple Medium Difficult Screen 1 2 3 Report 2 5 8 3GL component - - 10

  8. 3.3 Effort EstimationProductivity Estimate Calculation

  9. 3.3 Effort Estimation - Evaluating Models • No model captures cost for all types of development • PRED(25%) within 25% of actual cost • MMRE - mean magnitude of relative error (small is good)

  10. Risk

  11. 3.4 Risk ManagementRisk Management Activities (continued) • Example of risk exposure calculation

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