Determine the seasonal component of the time series

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Reference no: EM132443475

Question 1: The quarterly cost (in million) of Temitope Industries Nigeria PLC are as follow

Years/Quarters 1 2 3 4

1994 14.01 14.00 13.91 14.93

1995 14.00 14.36 14.42 15.942

1996 14.65 15.00 14.98 15.942

1997 15.06 15.75

Determine the seasonal component of the time series by ratio - to moving average method

Question 2: The following figures show the production in million of tons in a certain industry over a ten year period

Year	Production
1988	98
1989	92
1990	80
1991	89
1992	83
1993	69
1994	69
1995	67
1996	58
1997	61

a. Use the regression analysis method to estimate the trend component of the time series.

b.Use the equation to forecast production in 1998 and 1999.

Question 3: The following data shows the quarterly sales in million for WAZOBIA ventures Nigeria Plc.

Years/Quarters I II III IV

1994 73 71 88 104

1995 114 103 105 142

1996 153 152 158 165

1997 181 170 174 187

Calculate the seasonal index using the link relative method. Deseasonalise the original data.

Reference no: EM132443475

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