1. Which graph should I use?
Graphing
Which graph should I use?

2. What is a graph?
A graph is a visual way to organize data collected during an experiment.

3. Types of Graphs
Line graph
Bar graph
Pie graph

4. Does the graph show continuous data, such as changes over time?
Use a line graph
A line graph is used to compare two things and show how they are related
Often show changes over time

5. Example of line graph

6. Is the graph comparing two categories of data?
Use a bar graph
Lets us compare groups of data

7. Example of bar graph

8. Does the graph use percentages to describe data?
Pie charts are used to show percentages.
The slices of “pie” represent percentages that must add up to 100.

9. Example of pie graph 9