Observations, Experiments and Surveys

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What is an Observational Study?

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A research method where individuals are monitored for measures of variables of interest without any influence on their responses.

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What is an Experimental Study?

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A research method where participants are randomly assigned to different groups to test the effects of a variable.

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What is the difference between Observational and Experimental Studies?

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Observational studies observe subjects without intervention, while experimental studies involve manipulation of variables.

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What is data in the context of research?

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Information gathered from observations, surveys, and experiments.

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What is a population in research?

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The entire group of individuals or instances about whom we hope to learn.

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What is a sample in research?

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A subset of the population selected for observation and analysis.

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What is a Voluntary Response Sample?

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

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What is a Single-Blind Experiment?

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An experiment where the participants do not know which group they are in, but the researchers do.

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What is a Double-Blind Experiment?

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An experiment where neither the participants nor the researchers know who is in the control or experimental group.

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What is a control group?

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A group in an experiment that does not receive the treatment and is used for comparison.