A business magazine mailed a questionnaire to the treasurers of all of the Top 400 most profitable companies, and received responses from 25% of them. Those responding reported that they did not find that such surveys intruded significantly on their workday. Identify any potential sources of bias you can detect and any problems you see in generalizing the population. Undercoverage is possible, since only treasurers of the top 400 profitable companies were surveyed instead of all treasurers. Nonresponse bias is possible, since treasurers who feel that surveys intrude on their workday would be less likely to respond. Convenience sampling bias is possible, since it is easier to get information from the treasurers at the top 400 profitable companies than at other companies. There is no indication of bias.
A business magazine mailed a questionnaire to the treasurers of all of the Top 400 most profitable companies, and received responses from 25% of them. Those responding reported that they did not find that such surveys intruded significantly on their workday.
Identify any potential sources of bias you can detect and any problems you see in generalizing the population.
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Undercoverage is possible, since only treasurers of the top 400 profitable companies were surveyed instead of all treasurers. |
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Nonresponse bias is possible, since treasurers who feel that surveys intrude on their workday would be less likely to respond. |
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Convenience sampling bias is possible, since it is easier to get information from the treasurers at the top 400 profitable companies than at other companies. |
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There is no indication of bias. |
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