Compound Grey-Logistic Model and Its Application

Table 1

Raw data and forecast data of FAW Volkswagen’s market share.

Time (month/year)	Raw data (%)	Grey forecast (%)	Logistic forecast (%)	Grey-logistic forecast (%)	Time (month/year)	Raw data (%)	Grey forecast (%)	Logistic forecast (%)	Grey-logistic forecast (%)
2/18	5.41	5.87	6.24	5.87	8/19	7.42	6.27	4.77	6.28
3/18	5.68	5.93	6.14	5.89	9/19	7.95	6.29	4.71	6.30
4/18	5.38	5.95	6.03	5.91	10/19	7.60	6.31	4.65	6.32
5/18	5.61	5.97	5.94	5.94	11/19	7.73	6.33	4.59	6.34
6/18	5.82	5.99	5.84	5.96	12/19	5.80	6.35	4.53	6.36
7/18	6.67	6.01	5.75	5.99	1/20	7.09	6.37	4.48	6.38
8/18	7.12	6.03	5.66	6.01	2/20	4.07	6.39	4.42	6.40
9/18	6.31	6.05	5.57	6.03	3/20	6.65	6.41	4.37	6.42
10/18	5.68	6.07	5.49	6.06	4/20	5.71	6.43	4.32	6.44
11/18	5.42	6.09	5.41	6.08	5/20	6.34	6.45	4.27	6.46
12/18	5.65	6.11	5.33	6.10	6/20	6.22	6.47	4.22	6.48
1/19	5.26	6.13	5.25	6.13	7/20	5.59	6.49	4.17	6.50
2/19	6.39	6.15	5.18	6.15	8/20	6.49	6.51	4.12	6.52
3/19	5.69	6.17	5.10	6.17	9/20	6.88	6.53	4.07	6.54
4/19	6.96	6.19	5.03	6.19	10/20	6.94	6.55	4.03	6.56
5/19	6.06	6.21	4.96	6.21	11/20	6.96	6.57	3.98	6.57
6/19	5.83	6.23	4.90	6.24	12/20	5.66	6.60	3.94	6.59
7/19	6.74	6.25	4.83	6.26	1/21	6.55	6.62	3.90	6.61