Sampling Methods and Types of Bias

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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, rather than randomly selected.

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What is Selection Bias?

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A type of bias that occurs when the sample is not representative of the population due to the method of selection.

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What is Simple Random Sampling?

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A sampling method where every individual has an equal chance of being selected, often achieved using random number generators.

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What is Systematic Random Sampling?

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A sampling method where you select every nth individual from a list or sequence.

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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 as only those with strong opinions may respond.

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What is Non-Response Bias?

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A type of bias that occurs when individuals selected for the sample do not respond, potentially skewing the results.

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What is the purpose of Sampling in statistics?

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To gather data from a subset of a population to make inferences about the entire population.

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What is a Biased Sample?

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A sample that does not accurately represent the population, leading to skewed results.

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How can you reduce Selection Bias?

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By using random sampling methods to ensure every individual has an equal chance of being selected.

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What is the difference between a Sample and a Population?

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A sample is a subset of individuals from a population, which is the entire group of interest.