IWA Publishing

Skip to Main Content

Table 2

Results of the Mann–Whitney U test to compare willingness to use treated wastewater given a particular motivator across respondents in low-technology and high-technology sites

Motivators	Wastewater technology level	N	Median	Rank average	Sum of ranks	U	p
Cost	High	140	0.0	125.57	17,580.0	7,710.0	0.04*
Cost	Low	129	0.0	145.23	18,735.0	7,710.0	0.04*
Current water shortages	High	140	1.0	127.66	17,872.5	8,002.5	0.10
Current water shortages	Low	129	1.0	142.97	18,442.5	8,002.5	0.10
Future water shortages	High	140	1.0	122.41	17,138.0	7,268.0	0.00*
Future water shortages	Low	129	3.0	148.66	19,177.0	7,268.0	0.00*
Ecological conservation	High	140	1.5	120.47	16,866.0	6,696.0	0.00*
Ecological conservation	Low	129	3.0	150.77	19,449.0	6,696.0	0.00*

Motivators	Wastewater technology level	N	Median	Rank average	Sum of ranks	U	p
Cost	High	140	0.0	125.57	17,580.0	7,710.0	0.04*
Cost	Low	129	0.0	145.23	18,735.0	7,710.0	0.04*
Current water shortages	High	140	1.0	127.66	17,872.5	8,002.5	0.10
Current water shortages	Low	129	1.0	142.97	18,442.5	8,002.5	0.10
Future water shortages	High	140	1.0	122.41	17,138.0	7,268.0	0.00*
Future water shortages	Low	129	3.0	148.66	19,177.0	7,268.0	0.00*
Ecological conservation	High	140	1.5	120.47	16,866.0	6,696.0	0.00*
Ecological conservation	Low	129	3.0	150.77	19,449.0	6,696.0	0.00*

*Significantly different at 95% confidence level.