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<br />five/ ninety-five split, (5% are dissatisfied and 95% are satisfied) resulting in a more <br />precise estimate and a narrower confidence interval. <br /> <br />The table below depicts the required sample sizes for three confidence intervals: 1) <br />Calculated leniently, that is, based upon the presumption ofa five! ninety-five split in the <br />sample data, 2) Calculated presuming a twenty-five/ seventy-five proportion, and 3) <br />Calculated most conservatively, which is based upon the presumption of a fifty! fifty <br />proportion in the survey data. <br /> <br /> <br />25/75 SO/50 <br /> <br /> <br />73 <br /> <br />260 <br /> <br />333 <br /> <br />To achieve a confidence interval of plus or minus 5%, 333 completed interviews are <br />required. If Santa Ana WIB desires to make comparisons between customers based on <br />racial/ethnic category, education level, industry sector or some other factor, however, a <br />larger sample will provide more robust estimates of these sub-groups. Due to the high <br />proportion of Hispanic/Latino clients served by the WORK Center, we recommend a <br />total of 400 interviews with English and Spanish-speaking universal access customers <br />approximately proportionate to their distribution in the population of all universal access <br />customers. <br /> <br />Data Analysis and Report Production <br /> <br />The SSRC utilizes appropriate statistical techniques to analyze both quantitative and <br />qualitative data. Dr. Robinson and Ms. Osborn instruct graduate and undergraduate <br />courses in statistics and research methods for the CSUF psychology and sociology <br />departments, respectively. By maintaining this link to the instructional mission of the <br />University, they are able to stay abreast of the latest statistical and methodological <br />advances. In addition to our highly trained and experienced staff, as a University-based <br />research center, the SSRC has access to scholars active in their respective fields that can <br />provide a wide range of expert consultation. <br /> <br />SSRC researchers are skilled at presenting analytic results in a practitioner-friendly <br />format to ensure accessibility to a wider audience. For instance, all tabular and graphical <br />data are preceded by interpretive text that direct the reader's attention to the most salient <br />aspects of the analysis. To ensure a final report that meets Santa Ana WIB's needs, a <br />draft report will be circulated for feedback. <br /> <br />7 <br />