A cluster chart is like a bar chart except that it clusters several bars into a category and displays each cluster separately from the rest. For example, you could categorize quarterly sales data ...

An Excel table and a corresponding clustered bar chart. The table contains days of the week in column A, and then data for three weeks in columns B, C, and D.-1 ...

You can also choose a 3-D chart to add some aesthetic texture to the graph. These different graph options are relatively easy to create in Excel when you're looking to visually represent a data range.