Sample, Population, Bias EXIT TICKET

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What is a Population?

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A population consists of all subjects (human or otherwise) that are being studied.

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What is a Sample?

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A sample is a subset of a population used to represent the whole.

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What does it mean if a study is Biased?

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A study is biased if it does not accurately represent the population, leading to skewed results.

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What does it mean if a study is Unbiased?

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A study is unbiased if it accurately represents the population, leading to valid results.

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Example of a Population:

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The average weight of every person entering the mall within a 3-hour period.

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Example of a Sample:

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The average weight of 50 randomly selected people from the mall.

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What is Sampling Bias?

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Sampling bias occurs when certain members of a population are systematically excluded from the sample.

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What is a Random Sample?

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A random sample is a sample that is chosen randomly from the population, giving each member an equal chance of being selected.

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Why is it important to avoid bias in studies?

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Avoiding bias is crucial to ensure that the results are valid and can be generalized to the population.

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What is a Convenience Sample?

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A convenience sample is a type of non-random sample that is taken from a group that is easy to reach.