Sampling Techniques and Experimental Design

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What is Sampling?

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Sampling is the process of selecting a subset of individuals from a population to estimate characteristics of the whole population.

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What is a Population in statistics?

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A population is the entire group of individuals or instances about whom we hope to learn.

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What is a Sample?

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A sample is a subset of the population that is used to represent the entire group.

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What is a Census?

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A census is a survey that includes every member of the population.

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What is a Convenience Sample?

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A convenience sample is a type of non-probability sampling where the sample is taken from a group that is easy to reach.

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What is a Simple Random Sample?

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A simple random sample is a sampling method where every member of the population has an equal chance of being selected.

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What is Stratified Random Sampling?

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

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What is the importance of Random Sampling?

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Random sampling helps to eliminate bias and ensures that the sample is representative of the population.

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What is Non-Probability Sampling?

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Non-probability sampling is a sampling technique where not all individuals have a chance of being selected.

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What is Bias in Sampling?

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Bias in sampling occurs when certain members of the population are more likely to be selected than others, leading to an unrepresentative sample.