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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Non-response bias ： ウィキペディア英語版 Non-response bias Non-response bias occurs in statistical surveys if the answers of respondents differ from the potential answers of those who did not answer. It may occur due to several factors as outlined in Deming (1990).〔Deming, W. Edwards. Sample design in business research. Vol. 23. John Wiley & Sons, 1990.〕 == Example == If one selects a sample of 1000 managers in a field and polls them about their workload, the managers with a high workload may not answer the survey because they do not have enough time to answer it, and/or those with a low workload may decline to respond for fear that their supervisors or colleagues will perceive them as unnecessary (either immediately, if the survey is non-anonymous, or in the future, should their anonymity be compromised). Therefore, non-response bias may make the measured value for the workload too low, too high, or, if the effects of the above biases happen to offset each other, "right for the wrong reasons." For a simple example of this effect, consider a survey that includes, "Agree or disagree: I have enough time in my day to complete a survey." In the 1936 U.S. presidential election, The Literary Digest mailed out 10 million questionnaires, of which 2.3 million were returned. Based on this, they predicted that Republican Alf Landon would win with 370 of 531 electoral votes; he actually got 8. Research published in 1976 and 1988 concluded that non-response bias was the primary source of this error, although their sampling frame was also quite different from the vast majority of voters. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Non-response bias」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.