Math 4 ~ Review: Experiment/Observ Study & Population/Sample

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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 or outcomes without manipulating any variables.

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What is an experiment in research?

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An experiment is a study in which the researcher manipulates one or more variables to determine their effect on a dependent variable.

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What is a sample in research?

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A sample is a subset of a population selected for observation and analysis.

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What is a population in research?

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A population is the entire group of individuals or instances about whom we hope to learn.

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How do you identify a sample from a study?

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The sample is identified as the specific group of individuals selected from the population for the study.

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How do you identify a population from a study?

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The population is identified as the larger group from which the sample is drawn.

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What is the difference between a sample and a population?

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A sample is a smaller group selected from a population, while the population includes all individuals of interest.

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What is the significance of random selection in sampling?

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Random selection helps ensure that the sample is representative of the population, reducing bias.

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What is the purpose of observational studies?

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Observational studies aim to gather data on behaviors or outcomes in a natural setting without interference.

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What is the role of a researcher in an observational study?

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The researcher observes and records data without influencing the subjects or the environment.