1. What characteristics do you look for in a scatter plot for a data to help determine to use a linear, exponential model, or something different?
2. Find an article within the last two months that shows a linear relationship. Cite the source and give a brief description of the data.
3. Find an article within the last two months that shows an exponential relationship. Cite the source and give a brief description of the data.
4. Explain what this means "correlation does not imply causality". Give an example of two variables that have a strong correlations, but one variable does not cause the outcome in another variable.