Unit 2: Intro to Statistics for Research Fall 24' Final Exam Rev

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What is a cluster sample?

Back

A sampling method where units of the population are grouped, and one or more groups are selected at random. All units of the selected group are included in the sample.

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What is a systematic sample?

Back

A sampling method where every nth individual is selected from a list or queue, such as interviewing every 10th student.

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What is a stratified sample?

Back

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

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What is a quantitative variable?

Back

A variable that can be measured numerically, such as age, height, or weight.

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What is a simple random sample?

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A sampling method where every individual in the population has an equal chance of being selected.

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What is a voluntary response sample?

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A sampling method where individuals choose to participate, often leading to biased results.

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What is convenience sampling?

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A sampling method where samples are taken from a group that is easily accessible, which may not represent the entire population.

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What is the difference between qualitative and quantitative variables?

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Qualitative variables describe categories or qualities (e.g., gender), while quantitative variables represent numerical values (e.g., age).

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What is the purpose of stratified sampling?

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To ensure that specific subgroups within a population are adequately represented in the sample.

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What is the importance of random sampling in research?

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Random sampling helps to eliminate bias and ensures that the sample is representative of the population.