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The Statistics of Population Mean - Assignment Example

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This assignment "The statistics of population mean" provides the comparison of the z-test and t-test. Admittedly, a z-test is used to compare population mean with a standard or for comparing the means of two populations when the population standard deviation is known…
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The Statistics of Population Mean
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Download file to see previous pages A questionnaire is used to collect data in a survey. The main objectives in designing a questionnaire are to maximize response rate and obtain accurate relevant information for the survey. According to Leung (2001), there are no universal agreements about the optimal length of a questionnaire and it depends on the type of respondents. In general, a short questionnaire attracts higher response rate as compared to long complex ones (Leung, 2001). At the time of designing a questionnaire, following points must be taken into consideration. First, answer the questions yourself, how confidently you can answer questions from the questionnaire. Another thing is important that do not ask all the questions, some question should be skipped or randomized so that different respondents have a different subset of questions. Ask only the most important questions that are required for research/survey. The questions should be simple so that respondents can understand it. Another important aspect is that do not ask questions for the sake of asking questions (Henning, 2008). The order of the questions should from general to particular, easy to difficult or factual to abstract.Whenever possible, the questionnaire should not be started with a demographic and personal question. Many studies do not require demographic questions at all. Therefore, those demographic questions should be asked that are relevant to the survey and unnecessarily not personal from the point of view of the respondents. ...Download file to see next pagesRead More
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