Page 300 - Solid Waste Analysis and Minimization a Systems Approach

278 SOLID WASTE ESTIMATION AND PREDICTION

9
Regression coefficient for landfill disposal
8
7

6
costs ($/ton) 5

4

3
Landfill disposal cost is insignifcant in
2 predicting annual solid waste
generation at the 95% confidence level
1
for these groups
0
WDM MLM FDM FBM PPM CHM TRM ELM GOV MIN EDU RST AUT HTL RTL FDS MED CON ARG REC

20 Waste groups
Figure 16.9 Waste group regression coefficient comparison for
landfill disposal cost ($/ton).

In all waste groups, the number of employees was the most significant variable
to predict annual waste generation. This is logical, because the number of
employees should have a high correlation to the on size of a company direct
impact on annual waste generation tonnages. The more employees working at a
company, the more waste the company generates. The results of the regression

250
Regression coefficient for ISO 14001 certification 150

200

100

ISO 14001 Certification is
50
insignificant in predicting annual
solid waste generation at the 95%
confidence level for these groups
0
WDM MLM FDM CHM PPM FBM ELM TRM GOV MIN EDU RST AUT HTL RTL FDS MED CON ARG REC

20 Waste groups

Figure 16.10 Waste group regression coefficient comparison
for ISO 14001 certification.