Question: I need help on these questions. Please provide full explanation and provide steps! Sales of roof material, by quarter, since 2008 for Carolina Home Construction
I need help on these questions. Please provide full explanation and provide steps!

Sales of roof material, by quarter, since 2008 for Carolina Home Construction Inc. are shown below (in $ thousands): Quarter III $53 $170 224 226 IV $255 237 90 Year 2008 2009 2010 2011 2012 2013 2014 $218 209 247 257 275 302 312 241 266 115 116 274 300 305 292 311 285 318 a. Determine the typical seasonal patterns for sales using the ratio-to-moving-average method. (Round the final answers to 4 decimal places in thousands of dollars.) Quarter Seasonal Index N b. Deseasonalize the data, and determine the trend equation (Round the final answers to 3 decimal places in thousands of dollars.) Y'= +
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