If you want to demonstrate the comparative spending of the United States and Canada on four different kinds of social services, the type of visual aid that would be most effective is a bar graph.
A bar graph is a visual representation of data (typically grouped) in the form of rectangular vertical or horizontal bars, with the length of the bars equal to the data's measure.
Another name for them is bar charts. The bar graph is one tool used in statistics for data processing.
In order to compare how much money is spent on four different types of social services in the United States and Canada, a bar graph would be the most helpful visual aid.
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