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Data Visualization

Before After questions measured attitudes about the relative importance of safety, cost, the environment, performance, and convenience for a vehicle fuel or power supply for a home or business. Questions were posed to assess visions about the likelihood of various future applications of hydrogen technology. For most of the questions, "I don't know" or "I have no opinion" were perfectly acceptable answers. Questions about information sources (teachers, friends, government, etc.) and media (radio, Internet, magazines, etc.) were posed to assess how energy technology information is received. Usage of Media O for obtaining Hydrogen Energy information by Market Segment At various stages in their development the survey questionnaires were reviewed by National Hydrogen Association and U.S. Fuel Cell Council personnel and by management at the I FCT office. Federal Register notices were published, and Office of Management and Budget approval to conduct the surveys was obtained, per the Paperwork Reduction Act of 1995. General Public The general public and student survey samples were selected by random digit dialing. Potential large-scale end users were selected by random sampling. Surveys of state and local govemment officials and safety and codes officials were of their entire target populations (i.e., except for nonresponse, they are complete samples). All five surveys were administered by computer- assisted telephone interviewing (CATI). The general public and student surveys were administered in either English or Spanish, at the option of the respondents. For all populations except the safety and codes officials, the length of the survey was less than 15 minutes, including the introduction, screening process, and general information and demographic questions. The average interview length of safety and codes officials was 17 minutes. Limitations. The biggest data quality limitation of the hydrogen survey data is nonresponse bias. Table ES.1 shows 2004 and 2008/2009 response rates (percentages) by survey component population. Response rates were for the most part very slightly lower for the 2008/2009 surveys. This is consistent with trends toward cell-phone-only households and increasing use of caller ID. End Users* Table ES.1. Response Rates by Population, 2004 and 2008/2009 Surveys Population General public Students Government agencies End Users Safety and codes officials * In 2004, the population of safety and codes officials was not surveyed. 2004 2008/2009 23.0% 24.8% 27.5% 29.5% 95.9% 89.4% 29.1% NA 17.0% 77.2% State & Local Officials We are willing to accept nonresponse bias because we believe that it is not severe enough to invalidate the survey and because all reasonable measures were taken to minimize it (careful and aggressive callbacks, adjustments to sampling weights). We also expect that changes in response rates will not obscure measurements of changes in knowledge of, awareness of, and attitudes toward hydrogen. An issue involving telephone surveys is the possibility of undercoverage because of cell-phone-only households. While sampling weights provide a partial correction, it was not feasible to fully address the cell-phone-only issue in the 2008/2009 hydrogen surveys. Results. The data analysis focuses on the main data endpoints and survey objectives. Answers to the technical questions are compiled into technical knowledge scores. Opinions about safety Industry Publications Television Radio Internet News/General Publications "Potential hydrogen end users were defined as businesses and industries with potential commercial uses of hydrogen and/or hydrogen fuel cells. Hydrogen Knowledge and Opinions Surveys xiv April 21, 2010 Source: Hydrogen Knowledge and Opinions Survey, April 2010

Data Visualization

shared by rmmojado on Jan 25
This chart displays how consumers in different audience segments use the various media for obtaining information about hydrogen vehicles. The graphic allows for quick comparison of related data sets a...


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