Survey Error - SurveyError SurveyError...

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Survey Error Survey Error Reducing Survey Error and  Reducing Survey Error and  Increasing Accuracy  Increasing Accuracy 
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Sample Accuracy Sample Accuracy Three reasons why your sample may not  reflect your population: 1) Sampling error/sample variance 2) Sample bias 3) Non-sampling error
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Sampling Error Sampling Error Sampling Error – Repeated samples  from the  same population will vary around the  population’s true characteristics The level of sample error may be controlled by  sample size The larger the sample the greater the likelihood the sample  will reflect the population as a whole
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Sample Bias Sample Bias Sample Bias – Is the possibility that members of  the same population will vary systematically in  some way from the population Cannot be controlled by sample size Controlled by defining the population prior to drawing  the sample Selecting a sample that is fairly representative of the  population
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Non-Sampling Error Non-Sampling Error Non-Sampling error is a collective category of 
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This note was uploaded on 06/11/2010 for the course SOC 481 taught by Professor Burris during the Summer '09 term at University of Illinois at Urbana–Champaign.

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Survey Error - SurveyError SurveyError...

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