FORECASTING WITH TIME SERIES DATA SET–Quarterly Sales of BMW CARS in MILLIONS Ye

Question

FORECASTING WITH TIME SERIES

DATA SET–Quarterly Sales of BMW CARS in MILLIONS

Year                Quarter          Sales (1,000,000)

2012                1                      7.0

2                      6.4

                        3                      8.2

                        4                      8.8

2013                1                      8.0

                        2                      7.5

                        3                      9.0

                        4                      9.7

2014                1                      8.5

                        2                      8.0

                        3                      9.8

                        4                      9.9

2015                1                      8.5

                        2                      8.2

                        3                      9.5

4                                            9.9

2016                1    ? (forecast)

   2    ? (forecast)

   3 ? (forecast)

   4    ? (forecast)

Explanation / Answer

for series 1= (7+7.5+8.5+8.5)/4= 7.875

series 2= (6.4+7.5+8+8.2)/4= 30.1/4= 7.525

series 3= (8.2+9+9.8+9.5)/4= 36.5/4= 9.125

series 4= (8.8+9.7+9.9+9.9)/4= 38.3/4= 9.575

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