POPULATION OR SAMPLE (STATISTICS)

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What is a population in statistics?

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The entire group of individuals or items that is the subject of a statistical study.

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What is a sample in statistics?

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A subset of the population selected for observation and analysis.

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What is the difference between population and sample?

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Population includes all members of a defined group, while a sample is a smaller group selected from that population.

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What does it mean to survey a sample?

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

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What is a random sample?

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A sample in which every member of the population has an equal chance of being selected.

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Why is sampling important in statistics?

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Sampling allows researchers to gather data and make conclusions about a population without surveying every individual.

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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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What is a representative sample?

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A sample that accurately reflects the characteristics of the population from which it is drawn.

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What is convenience sampling?

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A sampling method where participants are selected based on their easy availability and proximity to the researcher.

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What is stratified sampling?

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A sampling method that involves dividing the population into subgroups and taking a sample from each.