Final answer:
Line graphs are an effective format for illustrating changes in data over time, emphasizing time and rate of change. They are often used to show trends in variables, such as the unemployment rate over time.
Step-by-step explanation:
A line graph is often the most effective format for illustrating a relationship between two variables that are both changing. For example, time series graphs can show patterns as time changes, like the unemployment rate over time.
A line graph connects individual data points that, typically, display quantitative values over a specified time interval. Line graphs consist of two axes: x-axis (horizontal) and y-axis (vertical), graphically denoted as (x,y).
Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.
Types of Line Graphs
- Simple Line Graph: Only one line is plotted on the graph.
- Multiple Line Graph: More than one line is plotted on the same set of axes. ...
- Compound Line Graph: If information can be subdivided into two or more types of data.
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