1. Bar Graphs, Line Graphs & Circle (pie) graphs
Tables, charts and graphs are convenient ways to clearly show your data.

2. Graphs
Class A
Class B

3. Graphs have things in common.
All graphs have a title.
A circle graph has a key.
A line and bar graph have a labeled X and Y axis.
The X axis is always the independent variable. (What is being changed by the experimenter).
The Y axis is always the dependent variable. (what is changed as a result of the independent variable).

4. Bar Graph
More Info

5. Double Bar Graph
More Info

6. Line Graph
More Info

7. Double Line Graph
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8. Circle Graph
More Info

9. Return to Graph
1. Bar Graph
The purpose of a bar graph is to display and compare data.
Bar graphs use bars to show the data.
A bar graph must include:
- a title
- labeled X and Y axes
- equal intervals are used on the Y axis
- the bars are evenly spaced apart from each other

10. 3. Line Graph A line graph is used to illustrate change over time.
Return to Graph
3. Line Graph
A line graph is used to illustrate change over time.
Line graphs need:
- Title
- Labeled X and Y axes
- Equal Intervals
- Data displayed by points connected by lines

11. Return to Graph
4. Double Line Graph
A double line graph is used to compare two sets of related data over time.
Double line graphs need:
- Title
- Labeled X and Y axes
KEY

12. Return to Graph
5. Circle Graph
Circle graphs are used to display parts of the data in relation to the entire amount of data.
All circle graphs need a title.
Each part is called a sector and is labeled.
All angles correct
Include a key

13. Return to Graph
2. Double Bar Graph
The purpose of a double bar graph is to compare two or more sets of data.
Uses bars to show the data.
Double bar graphs must include:
- Title
- Labeled X and Y axes
- Equal intervals are used on the Y axis
- Pairs of bars are equally spaced, but the compared bars are not
- Must have a Key