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# Graphs

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Understanding Graphs

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### Graphs

1. 1. Graphs<br />Using and Understanding Graphs<br />
2. 2. What are Graphs?<br />Graphs are pictures that help us understand amounts. These amounts are called data. <br />There are many kinds of graphs, each having special parts.<br />
3. 3. Parts of a graph<br />
4. 4. Kinds of Graphs<br />Pictograph<br />A pictograph uses an icon to represent a quantity of data values in order to decrease the size of the graph. A key must be used to explain the icon. <br />
5. 5. Kinds of Graphs<br />Pictograph<br />
6. 6. Kinds of Graphs<br />Pie chart<br />A pie chart displays data as a percentage of the whole. Each pie section should have a label and percentage. A total data number should be included. <br />
7. 7. Kinds of Graphs<br />Pie chart<br />
8. 8. Kinds of Graphs<br />Map chart<br />A map chart displays data by shading sections of a map, and must include a key. A total data number should be included. <br />
9. 9. Kinds of Graphs<br />Map chart<br />
10. 10. Kinds of Graphs<br />HistogramA histogram displays continuous data in ordered columns. Categories are of continuous measure such as time, inches, temperature, etc. <br />
11. 11. Kinds of Graphs<br />Histogram<br />
12. 12. Kinds of Graphs<br />Bar graphA bar graph displays discrete data in separate columns. A double bar graph can be used to compare two data sets. Categories are considered unordered and can be rearranged alphabetically, by size, etc. <br />
13. 13. Kinds of Graphs<br />Bar graph<br />
14. 14. Kinds of Graphs<br />Line graphA line graph plots continuous data as points and then joins them with a line. Multiple data sets can be graphed together, but a key must be used. <br />
15. 15. Kinds of Graphs<br />Line graph<br />
16. 16. Kinds of Graphs<br />Line graph<br />
17. 17. Kinds of Graphs<br />Line graph<br />
18. 18. Graphs<br />Using and Understanding Graphs<br />