1. Another way to think about VARIABLES….
Independent variable = the “input” data…for example, what is the experimenter putting into the experiment (CHANGING, MANIPULATING….)
Dependent variable = dependent on the other…for example, what relies on the change (RESULTS)

2. Identify variables….
You are interested in how stress affects heart rate in humans.
Identify the independent variable.
Explain!
Identify the dependent variable.

3. Answer…. Independent variable would be the stress
Dependent variable would be the heart rate
WHY: You can directly manipulate stress levels in your human subjects and measure how those stress levels change heart rate.

4. Identify variables….
You are a pharmaceutical sells representative. You are hired to make a drug that reduces blood pressure.
What would be a good control group?
Identify the independent variable.
Explain!
Identify the dependent variable.

5. Answer…. Independent variable would be the drug
Dependent variable would be the change in blood pressure.
WHY: You can directly manipulate the drug you prescribe to patients and measure how those drugs affect blood pressure.

6. Control
In this experiment, what would be a good control group?

7. Identify the variable…
"There will be a statistically significant difference in graduation rates of at-risk high-school seniors who participate in an intensive study program as opposed to at-risk high-school seniors who do not participate in the intensive study program." (LaFountain & Bartos, 2002, p. 57)
What would be a good control group?
Identify the independent variable
Explain!
Identify the dependent variable

8. Answers…
Independent Variable: Participation in intensive study program
Dependent Variable: Graduation rates
WHY: You can directly manipulate those seniors that participate in the study program and measure how their participation affects graduation.

9. Control
In this experiment, what would be a good control group?

10. Graphing CFA Take out a sheet of paper and put your name on it.
Title it “Graphing CFA”
Follow the directions on the powerpoint and write only your answers on your paper

11. Inquiry Lab
Ensure that you have three variables in your experiment: control, dependent and independent
Make sure your hypothesis is TESTABLE!
Finalize your introduction….make sure you answer the questions provided in your instructions.
Intro should be 4 – 5 complete sentences.
Relate research to the variable you are testing.
Incorporate your hypothesis.