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Table 3 Participants’ ratings of the characteristics of photovoltaic panels

From: The promotion of domestic grid-connected photovoltaic electricity production through social learning

Panel characteristic 2005 mean ratings (SD) 2012 mean ratings (SD) F(1,29) Probability
Environmentally worthwhile 1.87 (1.06) 2.12 (0.23) 0.59 <.45
Financially worthwhile 5.43 (0.19) 2.94 (0.17) 95.86 <.001
Not financially viable 3.29 (0.32) 4.53 (0.29) 8.38 <.01
Reliable 2.29 (0.27) 2.71 (.25) 1.29 <.27
Safe 2.00 (0.96) 2.65 (0.20) 4.69 <.04
Unnoticeable on roofs 2.00 (0.29) 3.35 (0.26) 12.03 <.01
Detract from the appearance of a house 4.71 (0.39) 3.59 (0.35) 4.63 p < .04