Review for Experimentation Test

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What is response bias?

Back

Response bias is a source of bias that occurs when the interviewer influences the answers given by respondents, leading to inaccurate or skewed results.

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What is a simple random sample?

Back

A simple random sample is a sampling method where each individual has an equal chance of being selected, such as drawing names from a box.

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What is undercoverage bias?

Back

Undercoverage bias occurs when certain groups in a population are left out of the selection process, resulting in a sample that does not represent the entire population.

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What is nonresponse bias?

Back

Nonresponse bias occurs when individuals selected for a sample do not respond, leading to a potential skew in the results if the nonrespondents differ from respondents.

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What is convenience sampling?

Back

Convenience sampling is a non-probability sampling method where the sample is taken from a group that is easily accessible, such as asking friends.

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How does response bias affect survey results?

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Response bias can lead to inaccurate data, as respondents may provide answers they think are expected or socially acceptable rather than their true opinions.

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What is the difference between voluntary sampling and random sampling?

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Voluntary sampling involves individuals choosing to participate, while random sampling involves selecting individuals randomly from the entire population.

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Why is it important to avoid bias in sampling?

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Avoiding bias is crucial to ensure that the sample accurately represents the population, leading to valid and reliable conclusions.

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What is an example of undercoverage bias?

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An example of undercoverage bias is conducting a survey about internet usage but only sampling individuals from a specific neighborhood without internet access.

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What is the impact of nonresponse bias on survey results?

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Nonresponse bias can skew results if the characteristics of nonrespondents differ significantly from those who respond, leading to unrepresentative findings.