What type of chart displays tasks on the vertical axis and time allocations on the horizontal axis?

A Gantt chart is specifically designed to display tasks or activities along the vertical axis, while the horizontal axis represents time allocations. This type of chart visually illustrates a project's schedule, showing when each task is supposed to start and finish. The bars representing the duration of each task provide a clear overview of the timeline, allowing project managers to track progress and make adjustments as necessary. The format is particularly useful in project management as it helps to visualize task dependencies and the overall timeline of a project, facilitating better planning and scheduling.

The other types of charts mentioned serve different purposes: a Pareto chart is used for quality control and prioritizing issues based on their frequency; a flow chart represents processes and workflows, showing the sequence of steps or decisions; while a pie chart displays data as parts of a whole, illustrating percentages of different categories. Each of these alternative charts serves distinct functions in data visualization and analysis, highlighting the unique role that Gantt charts play in project management.