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Use the sales data given below determine:
a) The least square trend line.
b) The predicted value for 2002 sales.
c) The MAD.
d) The unadjusted forecasting MSE.
Year
Sales(Units)
1995
130
1999
169
1996
140
2000
182
1997
152
2001
194
1998
160
2002
?
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