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. 2013 Aug 23;8(8):e74352. doi: 10.1371/journal.pone.0074352

Table 2. Rasch Model Fitness diagnoses for the Environmental Awareness Scale (EAS).

Outfit
Answers (%)
ITEM* Difficulty (logits) Standard error MNSQ Z Right Wrong
A septic tank is a container that transforms gray water into clean -1.84 0.12 0.82 -1.2 86 2
water.
The sludge from septic tanks is obtained and transformed into 0.88 0.09 0.83 -2.9 42 10
fertilizer.
The ocean is the source of tap water. -0.57 0.09 0.87 -1.9 68 7
The water extracted from wells comes from underground water -0.56 0.09 0.95 -0.7 69 9
sources.
Almost the 100% of gray water in the city leaks into the ground -0.94 0.1 0.97 -0.3 74 6
and can contaminate the underground sources of water.
The gray water from households is transformed into drinking 0.78 0.09 1.01 0.2 43 18
water in treatment plants.
Rain is the source of tap water. -0.67 0.09 1.04 0.5 70 5
The gray water from septic tanks goes into the ground. -0.01 0.09 1.13 2.1 59 13
Tap water comes from underground water sources. 0.45 0.09 1.08 1.4 51 17
Sludge and gray water from septic tanks go to a hole on the 2.48 0.11 1.33 2.1 17 30
ground.

* Items are listed in order of MNSQ.