What method involves tracking the performance of project tasks to visualize progress over time?

The method that involves tracking the performance of project tasks to visualize progress over time is a run chart. A run chart displays data points in the order they occur over time, allowing project managers and teams to see trends, patterns, and variations in performance. This can be particularly useful for identifying how task execution aligns with expected timelines and determining if specific tasks are falling behind.

In project management, run charts can help visualize the flow of work and monitor improvements or issues as they arise. It's an effective tool for continuous improvement because it can highlight whether processes are stable or if there are fluctuations that need attention.

The velocity chart, for example, focuses on measuring how many story points are completed in each iteration or sprint in agile methodologies. A burnup chart shows how much work has been completed versus the total work required over time, which is also important but serves a different purpose in visualizing project scope changes and completion against the initial target. A scatter diagram is primarily used to identify relationships between variables rather than tracking performance over time. Thus, while other charts have their significance in project management, the run chart is particularly suited for monitoring task performance over time.