A professor examines the relationship between minutes studying and exam score (out of 200 points)for a random sample of his students.The scatter diagram is shown below.It appears that study time has somewhat of a positive linear relationship with exam score. 
Definitions:
Wealth
The abundance of valuable financial assets or physical possessions which contributes to an individual's or group's prosperity and financial security.
Reaganomics
An economic policy attributed to U.S. President Ronald Reagan, characterized by tax cuts, deregulation, increased defense spending, and a reduction in government welfare programs.
Poorest Fifth
A term used to describe the bottom 20% of the population in terms of income or wealth distribution.
Income Dropped
A decrease in the amount of money received by an individual, household, or group over a certain period.
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