Question

Consider the following time series. t yt 1 1,234 2 1,201 3 1,103 4 987 5...

Consider the following time series.

t

yt

1

1,234

2

1,201

3

1,103

4

987

5

945

6

891

7

817

8

734

a. Construct a time series plot. What type of pattern exists in the data? No need to include the graph just state if the line has a horizontal pattern or a trend pattern

b. Use simple linear regression analysis to find the parameters for the line ?

c. Find  MSE for this time series.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

a. From the plot, it is clearly seen that data has a decreasing trend with time.

b. By fitting the linear regression line, we get

Y = 0 + 1X where  0 = 1315.679,   1 = -72.595

c. The MSE is = (21.51*21.51) = 462.68

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