1. Graphing

2. Creating Graphs
Why do we make graphs?

3. To view the data in an organized understandable way.
Creating Graphs
To view the data in an organized understandable way.

4. Which is easier to read??:
Creating Graphs
Which is easier to read??:

5. Creating Graphs or 17 out of 100 respondents prefer Isaac Newton
53 out of 100 respondents prefer Fig Newton
29 out of 100 respondents prefer Wayne Newton or

6. Of Course… It’s the graph
Creating Graphs
Of Course…
It’s the graph

7. Creating Graphs
In the graph below, there are two factors: the INDEPENDENT and DEPENDENT variables

8. Creating Graphs The INDEPENDENT variable:
Factors that could be changed in an experiment.
The DEPENDENT variable:
Changes as a result of a change in the Independent variable.

9. Creating Graphs The INDEPENDENT variable: ( Name of Newton )
Factors that could be changed in an experiment.
( Name of Newton )
The DEPENDENT variable:
Changes as a result of a change in the Independent variable.
( % of Respondents)

10. Looking at the slide below:
Creating Graphs
Looking at the slide below:
Dependent Variable
Independent Variable

11. This graph also has a name: It’s a BAR graph
Creating Graphs
This graph also has a name:
It’s a BAR graph

12. There are also pie charts.
Creating Graphs
There are also pie charts.
Or how you spend your money

13. Creating Graphs
And Line Graphs

14. Remember: Independent & Dependent Variables
Creating Graphs
Remember: Independent & Dependent Variables
Dependent Variable
Independent Variable

15. Which Graph type do I Choose?
. . . a Line graph.
Line graphs are used to track changes over short and long periods of time. Line graphs can also be used to compare changes over the same period of time for more than one group.
. . . a Pie Chart.
Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time.
. . . a Bar Graph.
Bar graphs are used to compare things between different groups or to track changes over time. However, when trying to measure change over time, bar graphs are best when the changes are larger.
Examples?!
Line:
Pie: How you spend your money
Bar:

16. Other Examples of Line Graphs

17. Creating Graphs Now to Create a Graph Look at your data -
Independent Variable on the X-Axis
Dependent Variable on the Y-Axis
Boiling temperature for salt solution

18. Creating Graphs Now to Create a Graph Look at your data -
Boiling temperature for salt solution
Independent Variable
Dependent Variable

19. Creating Graphs Let’s graph it.
Boiling temperature for salt solution
1) Place Independent Variable on X-Axis
Let’s graph it.

20. Creating Graphs 2) Place Dependent Variable on Y-Axis
Boiling temperature for salt solution
2) Place Dependent Variable on Y-Axis
120
100 80 60 40 20

21. Creating Graphs 3) Plot your points
Boiling temperature for salt solution
3) Plot your points
120
100 80 60 40 20

22. Creating Graphs 4) Label the X and Y axis Temp C Time (sec)
Boiling temperature for salt solution
4) Label the X and Y axis
120
100 80
Temp C 60 40 20
Time (sec)

23. Creating Graphs 5) Title the graph Boiling Temp for Salt Solution
Boiling temperature for salt solution
5) Title the graph
Boiling Temp for Salt Solution
120
100 80
Temp (C) 60 40 20
Time (sec)

24. Quantitative Data- Average Length (mm)
Mustard Seed Data
Quantitative Data- Average Length (mm)
Qualitative Data
Control
Variable
Observation #1
 2 mm
 1mm
Observation #2
 3 mm
 1 mm
Observation #3
 5 mm
Which type of graph should we use?