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Product Sales Since 1999 Are: the Least Squares Trend

Question 105

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Product sales since 1999 are: Product sales since 1999 are: The least squares trend equation is given as Ŷ = 265.12 - 21.18t, where t is set equal to one for 1999. On average, how much did sales change per year from 1999 to 2007? The least squares trend equation is given as
Ŷ = 265.12 - 21.18t, where t is set equal to one for 1999.
On average, how much did sales change per year from 1999 to 2007?

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