Representative and Biased Samples

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What is a representative sample?

Back

A representative sample is a subset of a population that accurately reflects the members of the entire population.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is a biased sample?

Back

A biased sample is a subset of a population that does not accurately reflect the members of the entire population, leading to skewed results.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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Why is it important to have a representative sample?

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A representative sample is important because it ensures that the results of a survey or study can be generalized to the larger population.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is sampling bias?

Back

Sampling bias occurs when certain members of a population are more likely to be selected for a sample than others, leading to an unrepresentative sample.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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How can surveys be biased?

Back

Surveys can be biased if they are only sent to a specific group, if the questions are leading, or if participation is voluntary.

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What is random sampling?

Back

Random sampling is a technique where every member of a population has an equal chance of being selected for the sample.

Tags

CCSS.HSS.IC.B.3

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What is stratified sampling?

Back

Stratified sampling is a method where the population is divided into subgroups (strata) and random samples are taken from each stratum.

Tags

CCSS.HSS.IC.B.3

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What is convenience sampling?

Back

Convenience sampling is a non-random method where samples are taken from a group that is easy to reach, which can lead to bias.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities, while quantitative data involves numerical values and measurements.

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What is a survey?

Back

A survey is a method of collecting data by asking people questions to gather information about their opinions, behaviors, or characteristics.

Tags

CCSS.RI.7.7

CCSS.RI.8.7

CCSS.RL.6.7

CCSS.RL.7.7

CCSS.RL.8.7