A New Multivariable Grey Convolution Model Based on Simpson’s Rule and Its Applications

Table 10

Estimated e-waste, population density, and median household income in case three from 2016 to 2020.

(year)	Estimated E-waste	Population density	Median household
	(tons)	(people/se mi)	Income ($)
2016	80377.91	108.10	65500.29
2017	85503.45	110.00	68550.43
2018	88941.10	111.77	66894.16
2019	90493.07	113.46	68298.47
2020	92405.41	115.11	69732.25