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The sample mean may differ from the population mean, especially for small samples.

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10y ago

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A representative sample is one where the statistics of the sample are the same as the statistics for the parent population.


What is the relationship between a sample and population is statistics?

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Are the sample mean and sample proportion of a population are called population parameters?

No, the sample mean and sample proportion are not called population parameters; they are referred to as sample statistics. Population parameters are fixed values that describe a characteristic of the entire population, such as the population mean or population proportion. Sample statistics are estimates derived from a sample and are used to infer about the corresponding population parameters.