Which of the following is NOT a common type of visual data representation?

Visual data representations are tools used to display data in a graphical format, making it easier to comprehend and interpret complex information. Bar graphs, pie charts, and line graphs are all standard methods of visualizing data. For example, a bar graph uses rectangular bars to compare different categories, a pie chart displays relative proportions of a whole, and a line graph showcases trends over time with points connected by lines.

In contrast, expository text refers to written content that aims to explain or inform rather than visually present data. It is a narrative format that can convey information but does not utilize graphical elements to represent that information visually. Therefore, it does not fit into the category of visual data representations. Understanding the distinction between visual representations and textual explanations is key to interpreting data effectively across various contexts.