Range area chart
Band chart; high-low area chart; angular range
This is an area chart that shows a range of values instead of a single line. It's ideal for showing the fluctuation of a variable over time or across categories when you have a high value and a low value for each data point.
Clearly label the upper and lower bounds of the range. Consider using a colour gradient to show the range. Don't use if the range of your values is very narrow or if the focus needs to be on a single value over time; a line chart might be more appropriate in these cases.
To show the range of estimated costs for different project scenarios and to highlight the potential risks and uncertainties.
What is the range of estimated return on investment (ROI) for your company's new product launch, based on different market scenarios?
Date/Time response, Numerical response, Rating scale