1. You can determine the effect of a treatment by using a correlational study. 
 True 
 False 

2. The more one eats, the more one weighs describes a 
 negative correlation 
 positive correlation 

3. The less one eats, the less one weighs describes a 
 negative correlation 
 positive correlation 

4. A .2 correlation indicates a stronger relationship than a + .1 correlation coefficient 
 True 
 False 

5. People taking a certain drug tend to be more depressed than the average person. Therefore, we can conclude 
 nothing about the effect of the drug 
 that the drug causes depression. 

6. If members of a certain cult do worse in school than other students we can conclude 
 nothing about the effect of the cult 
 that membership in this cult causes a drop in student grades 
