Question

Data on tuition and mid-career salary are collected from a number of universities and colleges. The result of the data collection is the linear regression model

ˆy=−0.97x+164y^=-0.97x+164

where x=x=annual tuition and y=y=average mid-career salary of graduates, both in thousands of dollars.

1. Which quantity is the independent variable?
   • annual tuition
   • average mid-career salary of graduates
2. According to this model, what is the average salary for a graduate of a college or university where the annual tuition is $30,000?
   $
3. What is the slope of this regression model?
   

Answer 1