Other Types of Graphs. 2-3. Other Types of Graphs. In addition to the histogram, the frequency polygon, and the ogive , several other types of graphs are often used in statistics. They are the bar graph, Pareto chart, time series graph, and pie chart. . Bar graphs .
When data is qualitative or categorical, bar graphs can be used to represent the data. It can be drawn using either horizontal or vertical bars.
When the variable on the horizontal axis is qualitative or categorical, a Pareto chart can also be used to represent data.
Differing scales and misrepresent data.