Samples - Biased vs. Unbiased

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What is a biased sample?

Back

A biased sample is one that does not accurately represent the population, leading to skewed results.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is an unbiased sample?

Back

An unbiased sample is one that accurately represents the population, giving every individual an equal chance of being selected.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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Define systematic sampling.

Back

Systematic sampling is a method where you select every nth individual from a list or group.

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CCSS.HSS.IC.B.3

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What is random sampling?

Back

Random sampling is a technique where every individual in the population has an equal chance of being selected.

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CCSS.HSS.IC.B.3

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What is convenience sampling?

Back

Convenience sampling involves selecting individuals who are easiest to reach, which may lead to biased results.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is voluntary response sampling?

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Voluntary response sampling occurs when individuals choose to participate in a survey, often leading to bias.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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Why is random sampling important?

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Random sampling is important because it helps ensure that the sample is representative of the population, reducing bias.

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CCSS.HSS.IC.B.3

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What is the difference between biased and unbiased samples?

Back

Biased samples do not represent the population accurately, while unbiased samples do.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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Give an example of systematic sampling.

Back

An example of systematic sampling is surveying every 10th person on a list of attendees.

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CCSS.HSS.IC.B.3

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What is the purpose of surveying a random sample?

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The purpose is to gather data that reflects the opinions or behaviors of the entire population.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1