Unit 3 Review

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What is Voluntary Response Sampling?

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A sampling method where individuals choose to participate, often leading to biased results because only those with strong opinions are likely to respond.

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What is Blinding in experiments?

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A technique where the subjects do not know whether they are receiving the treatment or a placebo, reducing bias in the results.

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What is a Survey?

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A method used to gather information from subjects by asking them questions about their characteristics or opinions.

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What is Convenience Sampling?

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A sampling method where the sample is taken from a group that is easily accessible, which may not represent the entire population.

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What is Bias in research?

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A systematic error that favors one outcome over another, potentially skewing the results of a study.

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What is a Confounding Variable?

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An outside influence that changes the effect of a dependent and independent variable, leading to erroneous conclusions.

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What is a Census?

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A survey that attempts to collect data from every member of a population.

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What is Randomization in experiments?

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The process of randomly assigning subjects to different treatment groups to eliminate bias.

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What is Replication in research?

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The repetition of an experiment to confirm findings and ensure reliability.

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What is Systematic Random Sampling?

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A sampling method where subjects are selected at regular intervals from a randomly ordered list.