Least squares regression in Excel, with future prediction and MSE

  

1. 
For the data below:

Year

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Automobile Sales

Year

Automobile Sales

1990

116

1997

119

1991

105

1998

34

1992

29

1999

34

1993

59

2000

48

1994

108

2001

53

1995

94

2002

65

1996

27

2003

111

(a) Determine the least squares regression trend line using the
Excel output from the Data Analysis tool. (5 pts)
(b) Determine the predicted value for 2004. Use the information
from part (a). (5 pts)
(c) Determine the 3 year moving average. (10 pts)
(d) Determine the MSE for the trend line (in a) and the 3 year
moving average (in c.)  Which forecasting method is better? Explain. (20
pts)
ALL WORK NEEDS TO BE SHOWN

  
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