Line Graph Lesson Topic Index | Grade 4 Math | Elementary Test Prep | StudyZone

 A line graph is a graph that connects points to show how data changes over time.

 How can you use a line graph? You can use a line graph to show how data changes over time. Each point represents an item of data. The height of the point represents the value of the data. The time is shown by how far to the right the point is.

 1. It is easy to read. 2. A broken scale can be used when the data     starts at a large number. 3. They show specific values of data,          so if you are given one variable     the other can easily be determined. 4. They show patterns in data clearly,     meaning that they visibly show how one      variable is affected by the other as it     increases or decreases. 5. They enable the viewer to make     predictions about the results of data.

 1. It can only be used to show data over         time. 2. You can change the way the data of a line     graph appears, by not using consistent     scales on the axis.

 Remember: A line graph has both advantages and disadvantages when using them.

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