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Question 5: The table below shows the quarterly export figures for a country in RM billions. Year Quarter 1 Quarter 2 Quarter 3 Quarter 4

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Question 5: The table below shows the quarterly export figures for a country in RM billions. Year Quarter 1 Quarter 2 Quarter 3 Quarter 4 2010 25 35 48 51 2011 30 48 61 68 2012 41 57 70 83 (a) Calculate a four-quarter moving average trend and the average seasonal variations for each quarter by using the multiplicative model. (16 marks) (b) Predict the export figures for the first and second quartiles of year 2013. (4 marks)

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