Matrix diagram helps to represent relationship between two data sets. In project management they are used widely in the form of risk rating matrix, RACI chart, Traceability matrix etc.
Risk rating matrix
![](https://pmri.in/wp-content/uploads/2020/10/Risk-rating-matrix-Impact-probability-matrix.png)
RACI Chart
![](https://pmri.in/wp-content/uploads/2020/10/RACI-chart.png)
![](https://pmri.in/wp-content/uploads/2020/10/sample-traceability-matrix.png)
Matrix diagram helps to represent relationship between two data sets. In project management they are used widely in the form of risk rating matrix, RACI chart, Traceability matrix etc.