Forecast using Trend line, MAD and MSE.
Utilize 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
|
?
|