This is because, majority of the respondents tend to visit the parks in group of family or friends rather than alone.
Because of the respondent-dependent nature of this study, it is difficult to ascertain what constitutes exposure to the aforementioned irritants.
8 The ceiling effect occurs when respondents are faced with a large QALY gain; however, because of the respondents' limited budget, the WTP amount increased less than proportionately with respect to the increase in QALYs.
There is also some potential for reporting bias which may have occurred because of the respondents' interpretation of the question or desire to report their emotions in a certain way or simply due to inaccuracies in responses.
Because 30 of the respondents were excluded because of missing values in the outcome variables studied, the final sample consisted of 460 individuals.
The 60.2% of respondents with Bachelor's degree was high because many of the respondents were either intern doctors or postgraduate students who tend to respond to surveys better than their senior counter parts.
One of the eight groups, young people up to the age of 25, has been quietly consulted all summer, eliciting 750 responses particularly encouraging to Dr. Rothman because none of the respondents demanded anonymity.
Whether or not respondents have previously noticed charging stations dominated their assessments, because most of the respondents do not yet have practical experiences with charging.
This is possible because most of the respondents receive encouragement from family and friends in relation to setting up their own business.
Consumerist because many of the respondents view nature as simply a source of food, wood and paper, etc -- of something to be consumed to meet human needs.
The researchers called the responses "eye-opening" because many of the respondents had participated in previous census-related testing and not expressed similar nervousness or hesitation about sharing information.
