1. Identify and describe the three sources of sampling bias and error that can occur when undertaking sampling.

2. Define and provide an example for each of the following concepts related to probability: basic probability, subjective probability, conditional probability, and joint probability (both independent and dependent).

3. Identify and briefly describe the three instances in which Pearson's R is not useful for measuring the correlation between variables.

4. Explain in detail, each of the four types of slope "effects" that can occur in a multiple regression.