#1.What information does a correlation coefficient convey?

#2.State whether each of the following is an example of a positive correlation or a negative correlation.

1. Higher education level is associated with a larger annual income.
2. Increased testosterone is associated with increased aggression.
3. The smaller the class size, the more students believe they are receiving a quality education.
4. Rising prices of apples are associated with the sale of fewer apples.
5. #3.Which is the predictor variable (X) and which is the criterion variable (Y) for each of the following examples?A researcher tests whether the size of an audience can predict the number of mistakes a student makes during a classroom presentation.
6. A military officer tests whether the duration of an overseas tour can predict the morale among troops overseas.
7. A social psychologist tests whether the size of a toy in cereal boxes can predict preferences for that cereal.