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

Front

What is the difference between qualitative and quantitative data?

Back

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

Front

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.6.7

CCSS.RI.7.7

CCSS.RI.8.7

CCSS.RL.7.7

CCSS.RL.8.7