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

Graphs Class A Class B

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).

Bar Graph More Info

Double Bar Graph More Info

Line Graph More Info

Double Line Graph More Info

Circle Graph More Info

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

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

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

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

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