Question: Consider the following annual sales data for 1996-2003, use the linear regression method and
a. determine the estimated sales equation.
b. determine the correlation coefficient and the coefficient of determination.

Year .....Sales
1996 ........2
1997 ........4
1998 ........10
1999 ........8
2000 ........14
2001 ........18
2002 ........17
2003 ........20