Please answer a) briefly if possible.

Topic - Federal funds rate and its effect on Consumer spending

Independent variable (x) : Federal Funds rate

Dependent variable (y) : the impact on Consumer Spending

Have you established the correlation coefficient determination of the topic?

a.1) Is the correlation positive when y tends to increase and negative when y tends to decrease?

a.2) Does the preciseness of the shift in y as x increases determine the strength of the linear correlation?