Which of the following is NOT a typical use of a Gantt chart?

A Gantt chart is primarily a visual tool used for project management and scheduling. Its primary functions include scheduling tasks over time, tracking progress, and visualizing which tasks need to be completed and when.

In that context, the correct answer is based on the fact that calculating project cost estimates is not a typical use of a Gantt chart. Gantt charts focus on the timing and sequence of tasks rather than financial details. While project costs may be indirectly tracked through the time depicted on a Gantt chart, the chart itself does not provide any direct means of calculating costs or linking those costs to specific tasks or overall project expenditures.

The other options are integral parts of what a Gantt chart is designed to do: it provides a clear timeline for scheduling tasks, visually represents progress by indicating which tasks are completed and which are ongoing, and can help illustrate task dependencies, showing which tasks must be completed before others can start. Hence, the focus of a Gantt chart is on timing and sequencing rather than on financial calculations.