The Real Reason You're Taking This Course

Think about the following equation. The income a person receives depends on the number of

years of education that person has received. The dependent variable is income,

while the independent variable is years of education. There is a causal relationship between

the two. The more education you get, the higher income you are likely to

receive. This relationship is so trivial that it is probably the reason you are watching

this course right now. You wanna get a higher income, so you are increasing

your education.