This is an image of a line graph, which is a type of geovisualization. Line graphs are commonly used to visualize activity in the stock market. This line graph shows the Dow Jones Industrial Average (DJIA) during a 20-year period from 1985 to 2005.A line graph is like a scatter plot, except that its data points are connected by a line. Line graphs compare two variables. Each variable is plotted along an axis. A line graph has a vertical axis and a horizontal axis. Some of the strengths of line graphs are that:
- They are good at showing specific values of data, meaning that given one variable the other can easily be determined.
- They show trends in data clearly, meaning that they visibly show how one variable is affected by the other as it increases or decreases.
- They enable the viewer to make predictions about the results of data not yet recorded.
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