Sales of roof material, by quarter, for 2007 through 2013, by Carolina Home Cons

Question

Sales of roof material, by quarter, for 2007 through 2013, by Carolina Home Construction Inc. are shown below (in $000).

Determine the typical seasonal patterns for sales using the ratio-to-moving-average method. (Round your answers to 4 decimal places.)

Deseasonalize the data and determine the trend equation. (Round your answers to 3 decimal places.)

Project sales for 2014 using the trend equation and seasonally adjust these values to find the predicted sales for each quarter. (Round your answers to 4 decimal places.)

Sales of roof material, by quarter, for 2007 through 2013, by Carolina Home Construction Inc. are shown below (in $000).

Explanation / Answer

a)

b)

y = 165.421691 +4.144932935 *t

c)

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