Research Article
A New Multivariable Grey Convolution Model Based on Simpson’s Rule and Its Applications
Table 7
E-waste, population density, and median household income in case three.
| (year) | E-waste | Population density | Median household | (tons) | (people/se mi) | Income ($) |
| 2003 | 18108.19 | 92.07 | 46967.25 | 2004 | 27341.56 | 93.30 | 49585.35 | 2005 | 35887.90 | 94.66 | 50004.20 | 2006 | 46126.41 | 96.48 | 53522.31 | 2007 | 53737.51 | 98.06 | 56141.32 | 2008 | 62071.46 | 99.31 | 57857.52 | 2009 | 69246.27 | 100.27 | 55458.05 | 2010 | 68777.91 | 101.19 | 54888.45 | 2011 | 69673.02 | 101.84 | 55500.26 | 2012 | 73851.24 | 102.59 | 56443.76 | 2013 | 65894.78 | 103.56 | 57283.94 | 2014 | 67822.93 | 104.85 | 60153.00 | 2015 | 72103.41 | 106.26 | 63439.20 |
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