PSY 1101 Lecture Notes - Lecture 5: Sample Size Determination, Blind Experiment, Random Assignment

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Kenneth Campbell

Document Summary

There is a positive correlation (the more you wear a helmet, the more likely you are to be in a bicycle accident) (remember this is not the cause, just a correlation) Very few bicycle injuries in the nl. We study one exceptional individual (or a few) is/are studied in detail. Exceptions to the rule (a single case may not be representative of the entire population) One design uses control and experimental groups sample a small number of individuals from a population randomization. But you could run the experiment a second or third time! (even other people could representative there are ethical problems because people have to volunteer. So are the people who volunteer different than the people who don"t. Why is the control group called the (cid:498)control group(cid:499) run it, and someone across the world could run it! (cid:524) (cid:498)do others get the same results.