Across
- 4. a fake treatment or drug
- 8. Watching people for the sake of research
- 9. An educated guess
- 10. Researchers often compare the experimental group and the ____ group
Down
- 1. A sample that is selected by chance, without manipulation
- 2. The independent variable affects the ...
- 3. A small segment of an entire population
- 5. The first step in the scientific method is to form a research
- 6. This research method can reveal a person's opinions
- 7. A research method used in rare or unique circumstances