Which of the following is a use for a Pareto diagram?

Evaluating vendor proposals in procurement management typically involves using criteria-based analysis, not a Pareto diagram, to compare and select vendors.

In cost management, determining actual versus expected project costs is typically achieved through variance analysis, earned value management, and other cost control techniques, not a Pareto diagram.

A Pareto diagram is a statistical chart used in quality management to identify and prioritize the most significant causes of problems or defects. It graphically illustrates the '80/20 rule,' indicating that a small number of causes are responsible for the majority of effects, thus helping teams focus improvement efforts where they will have the greatest impact.

In risk management, assessing potential project risk occurrences usually involves tools like probability and impact matrices, qualitative risk analysis, or quantitative risk analysis, not a Pareto diagram.