1.2. An Overview of Data http://www.ck12.org
- Observational study.
- Experiment. The research is imposing a treatment (different color rooms) on the mice.
- Observational Study. It would be unacceptable to intentionally expose a baby to potentially harmful sub-
stances. The dangers of lead paint were discovered through years of careful observational studies.
Further Reading
- Levels of Measurement: http://en.wikipedia.org/wiki/Level_of_measurement; http://www.socialresearchmet
hods.net/kb/measlevl.php - Peter and Rosemary Grant: http://en.wikipedia.org/wiki/Peter_and_Rosemary_Grant
- Framingham Heart Study: http://en.wikipedia.org/wiki/Framingham_Heart_Study