1.1-1.2 Sampling and Types of Data

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What is a population in statistics?

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A population is a large group that includes everything being studied.

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What is a sample in statistics?

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A sample is a small portion of the population used to gather data from.

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What is a simple random sample?

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In a simple random sample, all individuals and all subsets of the sample size have an equal chance of being selected.

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What is convenience sampling?

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Convenience sampling involves selecting individuals who are easiest to reach, such as interviewing the first 30 students who enter the school in the morning.

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Classify the data: The weight of baseball players on the Phillies this year.

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Continuous quantitative.

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What is systematic sampling?

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Systematic sampling involves selecting every nth individual from a list or sequence.

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What is stratified sampling?

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Stratified sampling involves dividing the population into subgroups (strata) and then taking a sample from each stratum.

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What is cluster sampling?

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Cluster sampling involves dividing the population into clusters and then randomly selecting entire clusters to sample.

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What is qualitative data?

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Qualitative data describes characteristics or qualities that cannot be measured numerically.

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What is quantitative data?

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Quantitative data is numerical and can be measured or counted.