Spectrum Graphs
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Spectrum graphs area line on which something is measured in equal units. These graphs may show smallest to largest but use indicators on a line divided into equal parts. Other spectrum graph examples include the color spectrum and temperature. Spectrum graphs can also be used to illustrate a range of attitudes about a subject.
Bar/Column Graphs
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Bar graphs are used for fixed amounts and are arranged to allow for ranking and comparison. Some examples include: number of birthdays per month, amount of food eaten by an animal, etc. A bar graph measures units from left to right, where column graphs measure units up o r down the page.
![Picture](/uploads/9/8/8/7/9887236/922955760.jpg?148)
Line Graphs
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Line graphs are appropriate for showing changing amounts, or changing amounts over time, for example, temperature averages over time.
Pie Charts
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Pie charts are ideal for highlighting differences in collected information. They clearly show the largest and smallest amounts of something. One difficulty with pie charts is the need to create a full circle, which is why the salami chart is useful. This allows the students to stack units of equal measure in appropriate ratios without having to convert it to 360 degrees.