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Table 6 Estimated coefficients (means and standard deviations) of the three models in the WTP space

From: Valuing the water supply: ecosystem-based potable water supply management for the Legedadie-Dire catchments, Central Ethiopia

  Fixed Uncorrelated (lognormal) Correlated (random)
Attribute WTP WTP WTP
Mean SD Mean SD Mean SD
Choice 1 27.01557 2.319 27.002 2.318 28.053 2.412
Choice 2 27.95799 5.593 27.478 6.646 32.251 6.914
Pressure − 1.72804 1.319 − 1.758 1.340 − 1.518 1.229
Quantity 2.944709 1.324 2.924 1.340 2.720 1.273
Quality 5.479457 1.665 5.508 1.680 5.448 1.641
Interruption − 1.66327 0.967 − 1.637 0.991 − 1.591 1.137
Dysentery − 0.9824 0.954 − 0.957 0.975 − 0.929 1.078
Piped water 0.813201 1.092 0.815 1.098 1.563 1.297
Education 1.56327 0.963 1.537 0.989 1.581 1.137
Vendor − 0.16659 0.077 − 0.432 0.019 − 0.997 1.000
Income 8.426616 0.045 8.551 0.024 9.071 1.640
Shortage − 1.75488 0.095 − 0.172 0.005 − 2.883 2.746
Price − 0.872 0.110 − 0.882 0.174 − 0.781 0.146