SAB9#58_59_Types_Relation_Activities_&_Types_Estimations

Melanny Barquera
Mind Map by Melanny Barquera, updated more than 1 year ago
Melanny Barquera
Created by Melanny Barquera over 5 years ago
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Mind Map on SAB9#58_59_Types_Relation_Activities_&_Types_Estimations, created by Melanny Barquera on 02/24/2016.

Resource summary

SAB9#58_59_Types_Relation_Activities_&_Types_Estimations
  1. PDM (Precedence Diagramming Method)

    Annotations:

    • or Activity-on-Node (AON)
    1. Finish to Start (FS)

      Annotations:

      • The most common
      1. one thing needs to end before the next can begin
      2. Start to Start (SS)
        1. activities begin at the same time
        2. Finish to Finish (FF)
          1. These two finish at the same time
          2. Start to Finish (SF)

            Annotations:

            • This dependency is rarely used
            1. An activity must star before the successor can finish
          3. Types of Dependencies
            1. External dependencies
              1. Sometimes your project will depend on things outside the work you are doing
              2. Discretionary dependencies (Preferred, Preferential, SOFT Logic)

                Annotations:

                • you should set discretionary dependencies based on your knowledge of the best practices for getting the job done
                1. it’s just a matter of preference.
                2. Mandatory dependencies (HARD Logic)
                  1. Mandatory predecessors are the kind that have to exist just because of the nature of the work
                  2. Internal dependencies
                    1. Some dependencies are completely within the team’s control
                  3. One-Point Estimating

                    Annotations:

                    • Is often not the best method to use
                    1. Expert judgment
                      1. Historical information
                      2. Analogous Estimating (Top-down)

                        Annotations:

                        • Advantages---------  -allows for quick calculation -less expensive Disadvantages-------  -This technique can be problematic -It can force people into padding their estimates
                        1. Expert judgment
                          1. Historical information

                            Annotations:

                            • previous projects
                          2. Parametric Estimating

                            Annotations:

                            • -more accurate than analog -The results of parametric estimating can become heuristics 
                            1. Historical information
                              1. Relationships between variables
                                1. Regression analysis (scatter diagram)
                                  1. 2 variables to see if they are related and creates a mathematical formula
                                  2. Learning curve
                                  3. Heuristics
                                    1. a generally accepted rule, or best practice
                                  4. Three-Point Estimating
                                    1. Triangular Distribution (Simple Average)
                                      1. equal weight
                                      2. Beta Distribution (Weighted Average)
                                        1. gives stronger consideration to the most likely
                                          1. Standar Deviation
                                            1. the possible range for estimate
                                        2. Group Decision Making

                                          Annotations:

                                          • team members
                                          1. brainstorming
                                            1. the nominal group technique
                                              1. Delphi technique
                                                1. anonymous
                                                  1. external experts
                                                2. Reserve Analysis
                                                  1. contingency reserves

                                                    Annotations:

                                                    • are included in the project schedule baseline
                                                    1. identified schedule risks
                                                    2. management reserves

                                                      Annotations:

                                                      • additional funds
                                                      1. unforeseen risks
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