Across
- 6. A _______ group is identical in every way to the experimental group except that it is not exposed to the treatment.
- 9. Observations inevitably lead to many _________.
- 10. _________ experiments are the standard way in which cause and effect relationships are studied.
- 11. ___________ are tested by making more observations or by setting up experiments (and observing the results)
- 12. A natural tendency of humans is to look for ___________ in observations and to wonder about the underlying processes.
- 13. An organized way of using logic and careful unbiased observations to answer questions.
Down
- 1. Any characteristics that can vary among individuals or groups in an experiment.
- 2. Populations are usually characterized by much ___________ and biological systems are complex, thus scientific studies typically provide probabilistic explanations of the world, not proof with absolute certainty.
- 3. Variables that are not controlled for in a study are known as _________ variables
- 4. Typically, the ________ variable is manipulated by the investigator.
- 5. The last step of the scientific method is to formulate a ________ and interpret the results
- 7. Step 5 of the scientific method is to design and conduct an experiment to test the _________.
- 8. Step 1 of the scientific method is making ________.