A common place where one symbol is used to express two different ideas is with bar graphs. So in a bar graph, a bar could represent a single number like a count or a stack five iguanas, three minivans ...

How to make a bar graph in Excel. First, open the Excel application and retrieve the spreadsheet you're pulling the data from. The bar graph needs to have a range of data before you can make it.

Bar charts are ubiquitous in the life-science literature, yet a study suggests that they’re often used in ways that can misrepresent research findings. The preprint 1, which was first posted on ...