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98 Page 7 Survey Methodology The online survey was administered in a number of ways. Respondents could visit the City of Redwood City website www.redwoodcity.org to take the survey and also, Redwood City Chamber of Commerce members received notification of the survey by emaiI and were asked to send an email invitation and link to the survey to all their employees. The survey was delivered as a paper survey distributed as an insert in the Independent/Examiner newspaper to Redwood City households. In addition, the survey was provided as a door hanger through a door-to-door service to 10,000 residents within a close radius to City of Redwood City's City Hall. Based on feedback from the stakeholder group the survey was also distributed at: community centers; at the Redwood City Caltrain station; at the Redwood City Farmer's Market; at Sequoia High School; at City Hall; at libraries, to the Redwood City Rotary Club members; and at grocery stores. Among the 30,300 households and the employees of employers that had the opportunity to take the survey, a total of2,349 responded. Because these 2,349 surveys were gathered through a wide variety of survey distribution channels, the data presents a useful picture of the needs of potential riders for a shuttle service within Redwood City. The results are representative, but not statistically valid. To achieve statistical validity, one of two methods could be used. A random telephone survey would be valid, but would not capture enough responses to get the detail needed. Respondents who had no interest in a shuttle wouldn't give useful infonnationabout routes, preferences, etc. The other statistically valid method would be to get responses from 40% of the population (households and Redwood City employees), or at least 15,000 surveys. Achieving this would be cost-prohibitive, and would be unlikely to give much better information than the method used, A large percentage ofthe respondents would not be interested in the shuttle. The method used gathered a large number of responses from several segments of the population, including the ones most likely to use the shuttle. It is important to note that survey respondents are more likely to have a positive reaction to the idea of a shuttle than non-respondents. In short, people who aren't at all interested in a shuttle probably didn't complete a survey. Acknowledging this response bias means taking care not to specifically extrapolate ridership projections from this data. Table I on the following page shows the Survey Source and number of respondents by source. .., .) -.-.. ____._"._~_..__"..."._........."e_.".."