Practice with Sampling Methods

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What is a Census?

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A Census is a survey that includes every member of a population. It aims to gather complete data about the entire group.

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What is a Sample?

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A Sample is a subset of a population selected for observation and analysis. It is used to make inferences about the larger group.

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What is a Biased Sample?

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A Biased Sample is a sample that does not accurately represent the population, often due to the method of selection.

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What is a Random Sample?

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A Random Sample is a sample that is selected from a population in such a way that every member has an equal chance of being chosen.

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What is a Stratified Sample?

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A Stratified Sample is a sampling method where the population is divided into subgroups (strata) and random samples are taken from each stratum.

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What is a Convenience Sample?

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A Convenience Sample is a non-random sample that is taken from a group that is easy to reach, which may lead to biased results.

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What is a Voluntary Sample?

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A Voluntary Sample is a sample where participants choose to respond or participate, often leading to self-selection bias.

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What is a Cluster Sample?

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A Cluster Sample is a sampling method where the population is divided into clusters, and entire clusters are randomly selected.

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What is Simple Random Sampling (SRS)?

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Simple Random Sampling (SRS) is a sampling method where each member of the population has an equal chance of being selected, without any stratification.

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Why is it important to avoid bias in sampling?

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Avoiding bias in sampling is crucial to ensure that the results are representative of the population, leading to valid conclusions.