Types of Statistical Studies

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What is an experimental study?

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An experimental study is a research method where the researcher manipulates one or more variables to determine their effect on a dependent variable, often involving random assignment to groups.

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What is an observational study?

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

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What is a sample survey?

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A sample survey is a method of collecting data by selecting a subset of individuals from a larger population to estimate characteristics of the whole population.

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What is a census?

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A census is a study that attempts to collect data from every member of a population.

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What is the population in a study?

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The population is the entire group of individuals or instances about whom the researcher wants to draw conclusions.

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What is a sample in research?

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A sample is a subset of the population selected for participation in a study.

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What is random assignment in experimental research?

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Random assignment is the process of assigning participants to different groups in a study by chance, which helps to ensure that the groups are comparable.

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What is the purpose of a control group in an experiment?

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The control group serves as a baseline to compare the effects of the treatment or intervention applied to the experimental group.

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What is the difference between qualitative and quantitative research?

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Qualitative research focuses on understanding concepts, thoughts, or experiences, while quantitative research focuses on quantifying data and generalizing results.

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What is a variable in research?

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A variable is any characteristic, number, or quantity that can be measured or counted.