Use the sales data given below determine a the least square, Ask an Expert

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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)	Year	Sales(Units)
1995	130	1999	169
1996	140	2000	182
1997	152	2001	194
1998	160	2002	?

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