Research Article
Model of Automobile Parts Sale Prediction Based on Nonlinear Periodic Gray GM(1,1) and Empirical Research
Table 2
Automotive seat sales of F-Company in 2012–2018 (unit: ten thousand).
| Year | Month sales | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 2012 | 15.21 | 15.03 | 18.23 | 16.54 | 20.36 | 19.63 | 13.64 | 19.05 | 24.36 | 23.15 | 20.48 | 22.36 | 2013 | 16.14 | 15.96 | 18.63 | 16.5 | 20.15 | 19.56 | 13.42 | 19.52 | 24.65 | 23.54 | 21.35 | 21.41 | 2014 | 16.89 | 16.52 | 19.54 | 16.34 | 20.01 | 20.82 | 14.76 | 18.06 | 25.13 | 23.68 | 21.68 | 21.59 | 2015 | 17.05 | 16.98 | 19.15 | 16.8 | 20.08 | 20.93 | 14.07 | 18.16 | 25.52 | 23.98 | 21.51 | 21.65 | 2016 | 17.04 | 17.06 | 17.84 | 16.35 | 20.6 | 20.41 | 15.46 | 19.42 | 26.6 | 27.37 | 24.28 | 27.52 | 2017 | 17.11 | 17.62 | 19.56 | 16.52 | 20.89 | 21.06 | 16.58 | 20.25 | 26.72 | 27.69 | 24.39 | 27.88 | 2018 | 18.16 | 18.10 | 20.45 | 18.12 | 22.21 | 22.14 | 16.32 | 20.89 | 27.85 | 27.41 | 24.51 | 25.91 |
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