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Graphing Data: Line Graphs
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  1. Graphing Data:Line Graphs Algebra Seminar I

  2. What is a Line Graph?? • A line graph is a type of graph that uses line segments between known data points to show changes that have occurred over time.

  3. Remember Back….. • Remember Scatter plots???? • What did we do when we were given a set of data? • Coordinate Plane • Plotted points • Found what? • With Line Graphs we connect all the points Line of Best Fit

  4. What are they used for?? • 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 (we will talk about these tomorrow). • Line graphs can also be used to compare changes over the same period of time for more than one group.

  5. Sales of iTouch in the first 2 years of it’s Invention

  6. Multi-Line Graphs • Multiple line graph is a line graph that shows changes in data over time for more than one category. • What if we were to compare the sales of multiple electronic devices in one Line Graph….. What would that look like?

  7. Multi-Line Graph Example