Lecture 2

Question 1

Steps of the scientific method

Answer 1

1, observation
2. Ask questions
3. Formulate a hypothesis
4. Make a prediction
5. Test prediction (experiment)
6. Analysis & interpretation of results
7. Conclusion

Question 2

Independent variable

Answer 2

The variable you are manipulating

Question 3

Dependent variable

Answer 3

The variable you are measuring

Question 4

Controlled variables

Answer 4

Variables that you keep constant

Question 5

Important considerations in experiment planning

Answer 5

• Avoid bias
• placebo effect
• sample size
• repeatability

Question 6

2 conclusions in science

Answer 6

• Reject your hypothesis
• do not reject your hypothesis (support not proof)