1. Suppose you run a simple regression on a dataset with 123 colleges, with percent of students who are receiving financial aid as the dependent variable and the total in-state tuition, in $10,000 units. The unstandardized regression coefficient is 8.43. What is the correct interpretation of the regression coefficient?

1		A $10,000 unit increase in tuition is associated with an 8.43 increase in the percent of students who are receiving financial aid.
2		A dollar increase in tuition is associated with an 8.43 increase in the percent of students who are receiving financial aid.
3		Institutions with high tuition have an 8.43 percent more students receiving financial aid than institutions with low tuition.
4		A one percent increase in students receiving financial aid is associated with a 8.43 percent increase in tuition.