MATH 1F92 Chapter Notes - Chapter 1: Response Bias, Convenience Sampling
19 Sep 2016
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Bias: if the results of the sample are not representative (either over or under represented) of the population, then the sample has bias. There are three types of bias in sampling: sampling bias, non-response bias, response bias. All surveys will suffer from non-response: non-response can be controlled using call-backs or even rewards. Response bias exists when the answers on a survey do not reflect the true feelings of the respondent. Right: do you favor or oppose the reduction of estate taxes?: ordering of questions or words: questions should be rearranged as much as possible so to avoid having previous responses from affecting others. Movement of words can also help to eliminate potential bias: type of question: one of the first considerations in designing a question is determining whether the question should be open or closed. Open question: allows the respondent to choose his or her response.
