Statistics for Management and Economics (Book Only)
Statistics for Management and Economics (Book Only)
11th Edition
ISBN: 9781337296946
Author: Gerald Keller
Publisher: Cengage Learning
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Chapter 20.5, Problem 34E
To determine

Average seasonal index.

Expert Solution & Answer
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Explanation of Solution

The linear equation is y^=150+3t.

Table 1 shows the estimated output (y^) that is obtained using the above equation.

Table 1

Quarterty^SIForecast
1412730.7191.1
2422761.2331.2
3432791.5418.5
4442820.6169.2

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