To find the confidence to do a quality test 2 tools are the environmental knowledge and comments about environmental management within the market, and then the value of confidence (Reliability) by Alpha coefficient value (Coefficient Alpha) of Cronbach)
To bring out the conviction. Psychometric testing by 2 different environmental knowledge. And comments on the environmental management within the market. The data come to the conviction. (Reliability) by alpha coefficient (Coefficient Alpha) of Cronbach).
To bring the reliability. The test quality tools 2 parts, namely, knowledge environment. And comments about the environmental management in the market. The data for reliability (Reliability).(Coefficient Alpha) of Cronbach).