The 100% stacked bar chart below shows how different US households spend money on everyday necessities. The 100% refers to the y-axis which is based on percentages and not absolute dollars. This allows the reader to compare the percent of spend in each bucket as they look across each type of household rather than the absolute amount. For example, we can see that married couples spend a smaller portion of their overall spend on housing compared to single people. This is expected as sharing a home provides significant synergies. However, if we had used a regular bar chart the married spend would be much taller and the comparison would be more difficult to make.
This chart was built using the Aploris data visualization add-in for PowerPoint (Mac).