Examine the data from Exercise 4.
Year Enrollment
2006 ......................... 801
2007 ......................... 834
2008 ......................... 844
2009 ......................... 897
2010 ......................... 922
a. Find the mean (arithmetic average) of the five years.
b. Find the mean of the five enrollment figures.
c. Create an ordered pair whose x-value is the mean of the years and whose y-value is the mean of the enrollments.
d. Show that the ordered pair satisfies the linear regression equation.
What does this mean regarding the regression line?