- A matrix diagram, also known as a matrix chart, is a project management tool that helps with relationship investigation.
- The Matrix Chart shows relationships within a single group or between two, three, or four groups (Ex. project objective, methods, results, causes, people, etc.).
- It also contains details about the group's relationship strength and the roles that different group members perform.
- The relationship is then indicated by a number or symbol in each cell where the two items intersect in the matrix. A matrix diagram can be used as part of other decision making tools.
- Cause and Effect Matrix and Quality Function Deployment are examples of tools that use the matrix diagram