Use the sales data given below to determine
a. the least squares trend line?
b. the predicted value for 2002 sales?
c. the MAD?
d. the unadjusted forecasting MSE?
Year / Sales
1995 / 130
1996 / 140
1997 / 152
1998 / 160
1999 / 169
2000 / 182
2001 / 194
2002 / _?__