Problem:
Given the following table:
Year:  1980  1981  1982  1983  1984  1985  1986  1987  1988  1989 
DJ Average  824  972  882  1027  1252  1198  1537  1927  2015  2144 

[Extracted from the Chance site.]
find and graph the least squares regression line.
Visualization:
Using TI86 graphing calculator:
Constructed with the help of Chris O'Brien.