Time series analysis for sales of roof material

Assignment Help Basic Statistics

Reference no: EM1396596

Sales of roof material, by quarter, since 1997 for Carolina Home Construction, Inc. are shown below (in $000).

Quarter

Year I II III IV

1997 210 180 60 246

1998 214 216 82 230

1999 246 228 91 280

2000 258 250 113 298

2001 279 267 116 304

2002 302 290 114 310

2003 321 291 120 320

a. Determine the typical seasonal patterns for sales using the ratio-to-moving-average method.

b. Deseasonalize the data and determine the trend equation.

c. Project the sales for 2004, and then seasonally adjust each quarter.

Reference no: EM1396596

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