Population and Samples

Front

What is a sample in a survey?

Back

A sample is a subset of individuals or objects selected from a larger population for the purpose of conducting a survey.

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What is a population in statistics?

Back

A population is the entire group of individuals or objects that is the subject of a survey or study.

Front

What is the difference between a sample and a population?

Back

A sample is a smaller group selected from a population, while a population includes all members of a specified group.

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What is a random sample?

Back

A random sample is a subset of a population in which each member has an equal chance of being selected.

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Why is it important to have a representative sample?

Back

A representative sample accurately reflects the characteristics of the population, leading to more valid and reliable survey results.

Front

What is bias in sampling?

Back

Bias in sampling occurs when certain members of a population are more likely to be selected than others, leading to skewed results.

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How can random sampling reduce bias?

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Random sampling ensures that every individual has an equal chance of being selected, minimizing the risk of bias.

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What is convenience sampling?

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Convenience sampling is a non-random sampling method where individuals are selected based on their easy availability.

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What is stratified sampling?

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Stratified sampling involves dividing the population into subgroups (strata) and randomly selecting samples from each stratum.

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What is the purpose of conducting a survey?

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The purpose of conducting a survey is to gather information or opinions from a group of individuals about a specific topic.