Question: PLEASE PROVIDE MANUAL WORKING FOR THIS QUESTION IN A TIMELY FASHION. THE USE OF EXCEL/ COMPUTER ISN'T ALLOWED. (b) The sales for soca CDs at

PLEASE PROVIDE MANUAL WORKING FOR THIS QUESTION IN A TIMELY FASHION. THE USE OF EXCEL/ COMPUTER ISN'T ALLOWED.

(b) The sales for soca CDs at a music store follows a seasonal pattern with a trend. The following deseasonalised data is to be used: Year 2010 2011 Quarter 1 24 29 Quarter 2 26 28 Quarter 3 26 30 Quarter 4 28 33 The seasonality indices (calculated over many years' data) are given to be: Quarter 1 1.5 Quarter 2 0.9 Quarter 3 0.7 Quarter 4 X Using the Decomposition Method, predict the sales figures for the four quarters of 2012. [10 marks]

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