[Retracted] Sales Forecast of Marketing Brand Based on BP Neural Network Model

Table 5

Data after ABC denoising.

Years	Monthly sales
	The first quarter			The second quarter			The third quarter			The fourth quarter
	January	February	March	April	May	June	July	August	September	October	November	December
2015	1	2	1	4	3	7	11	8	5	2	4	3
2016	3	6	8	7	14	5	16	29	9	11	6	3
2017	5	7	23	15	42	48	54	59	37	46	30	29
2018	36	21	17	69	52	49	47	43	32	23	19	41
2019	53	35	35	34	53	64	75	54	68	52	49	45
2020	28	36	46	92	90	89	84	104	90	85	52	64