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Consider the Following Set of Quarterly Sales Data Given in Thousands

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Consider the following set of quarterly sales data given in thousands of dollars.
Consider the following set of quarterly sales data given in thousands of dollars. Write an appropriate dummy variable model that incorporates a linear trend and constant seasonal variation. Write an appropriate dummy variable model that incorporates a linear trend and constant seasonal variation.

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There are (4 − 1) = 3 binary seasonal va...

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