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This Concept Map, created with IHMC CmapTools, has information related to: Chapter 6 Project Time Estimates, Project Time Estimates Includes Guesstimating, Bottom Up Estimating Is Dividing project into smaller modules and then directly estimating time and effort in terms of person resources, Project Time Estimates Includes Bottom Up Estimating, Project Time Estimates Includes Top Down Estimating, Time Boxing Is Technique where box of time is allocated for specific activity or task, Guesstimating Is Quick and Easy, Guesstimating Is Guessing at estimates, Guesstimating Is Usually Optimistic, Time Boxing Is Only have time frame to finish task, Top Down Estimating Is Can be very optimistic, Top Down Estimating Is Estimating Schedule and/or cost of entire project in terms of how long it "should" take or cost, Time Boxing Is Can be focused, but can cause team to become burned out, Project Time Estimates Includes Delphi Technique, Delphi Technique Is Can take longer and be more costly, Bottom Up Estimating Is Uses analogous estimation, Delphi Technique Is If experts estimates are close, numbers are averaged and used as estimate, Project Time Estimates Includes Time Boxing, Delphi Technique Is Multiple experts who arrive at consensus on particular subject or issue, Top Down Estimating Is Can be very effective