Explanation
A responsibility assignment matrix (RAM) chart is a type of chart that shows the correlation between project team members and the work they've been assigned to complete. A RAM chart is a matrix that maps the project activities or deliverables to the project roles or resources. A RAM chart helps to define and clarify the roles and responsibilities of the project team members, as well as to identify the gaps, overlaps, or conflicts in the work assignments. A RAM chart is also known as a linear responsibility chart (LRC) or a resource allocation matrix (RAC). A RACI chart is a specific type of RAM chart that uses the RACI notation to indicate the level of involvement of each team member in each activity or deliverable. References: CBAP / CCBA Certified Business Analysis Study Guide, chapter 6, page 237; CBAP Sample Questions, question 239.