In accordance with the PMBOK Guide, the Pareto chart is a specific type of vertical bar chart used as a tool and technique within the Project Quality Management knowledge area, specifically in the Manage Quality and Control Quality processes.
* The Pareto Principle: It is based on the 80/20 rule, which states that a relatively small number of causes (20%) typically produce the majority of the problems or defects (80%).
* Purpose and Use:
* Prioritization: It ranks causes from most frequent to least frequent, helping the project team identify the " vital few " problems that should be addressed first to achieve the greatest improvement in quality.
* Data Visualization: The chart displays the frequency of occurrences along with a cumulative percentage line.
* Application: By using a Pareto chart, a Project Manager can see which categories of defects are occurring most often. For example, if 80% of software bugs are coming from one specific module, the team knows to focus their quality improvement efforts there.
* Comparison with Other Domains:
* Project Scope Management (A): Uses tools like the WBS and Requirements Traceability Matrix.
* Project Time Management (B): Uses Gantt charts, Network Diagrams, and Critical Path Method.
* Project Communications Management (C): Uses Communication Requirements Analysis and Reporting systems.