True.
A PERT (Program Evaluation and Review Technique) chart is a project management tool used to schedule, organize, and coordinate tasks within a project. The PERT chart helps to identify the critical path, which is the sequence of tasks that must be completed on time to ensure that the project is finished on schedule. By identifying the critical path, project managers can focus on the tasks that are most important to the project's success.
In addition, PERT charts can be used to estimate the time required to complete each task within the project. By using statistical methods to estimate the duration of each task, project managers can develop more accurate schedules and timelines.
Therefore, the statement "a PERT chart can be an effective tool to help with critical path analysis as well as time estimation" is true.