The test statistic for a Pearson's correlation is the Pearson's correlation coefficient and is notated with "r"

1. What are the possible values for r?
2. What does a correlation of zero mean in terms of the two variables (X and Y)?
3. What does a positive correlation mean in terms of the two variables (X and Y)?
4. What does a negative correlation mean in terms of the two variables (X and Y)?
5. Describe 3 research questions (specific scenarios) that you would use a Pearson's correlation for