Stats: Collecting Data

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What is sampling variability?

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Sampling variability refers to the natural variation in the results obtained from different samples taken from the same population.

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How can you reduce sampling variability?

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By increasing the sample size.

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What is convenience sampling?

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Convenience sampling is a non-probability sampling technique where subjects are selected because of their convenient accessibility and proximity to the researcher.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is voluntary response bias?

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Voluntary response bias occurs when individuals select themselves to participate in a survey, often leading to a biased sample.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is an observational study?

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An observational study is a type of research where the researcher observes and records behavior without manipulating any variables.

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CCSS.HSS.IC.B.3

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What is an experiment in statistics?

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An experiment is a study in which the researcher manipulates one or more variables to observe the effect on another variable.

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CCSS.HSS.IC.B.3

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What is undercoverage bias?

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Undercoverage bias occurs when some members of the population are inadequately represented in the sample.

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CCSS.HSS.IC.B.3

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What is nonresponse bias?

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Nonresponse bias occurs when individuals selected for the sample do not respond, leading to a potential bias in the results.

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CCSS.HSS.IC.B.3

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What is stratified sampling?

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Stratified sampling is a method of sampling that involves dividing the population into subgroups (strata) and taking a sample from each stratum.

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CCSS.HSS.IC.B.3

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What is simple random sampling?

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Simple random sampling is a sampling method where every member of the population has an equal chance of being selected.

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CCSS.HSS.IC.B.3