TOPIC: SIMPLE LINEAR REGRESSION
Consider following couples of variables and discuss whether you expect to find positive, negative, or no correlation between them. In each of the positive and negative examples, indicate whether or not you expect the correlation to be strong or weak.
(a) earnings and education.
(b) productivity growth and initial level of per capita income for all countries of the world.
(c) employment and real wages.
(d) consumption and the (real) interest rate