AQR - unit 3 mid-unit review 2024

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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. It is used to identify correlations or patterns.

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What is a Convenience Sample?

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A Convenience Sample consists of individuals from the population who are easy to reach. It is often used for quick data collection but may not represent the entire population.

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What is the difference between an Observational Study and an Experiment?

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An Observational Study observes subjects without intervention, while an Experiment involves manipulating one or more variables to determine their effect on a response.

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What is an Independent Variable?

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The Independent Variable is the variable in an experiment that is deliberately changed or manipulated by the scientist to observe its effect.

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What is the Placebo Effect?

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The Placebo Effect is a phenomenon where a person experiences similar effects as those receiving an active treatment, despite receiving an inactive treatment.

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What is a Dependent Variable?

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The Dependent Variable is the variable that is measured in an experiment to see how it is affected by changes in the independent variable.

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What is a Voluntary Response Sample?

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A Voluntary Response Sample consists of individuals who choose to participate in a survey or study, often leading to biased results due to self-selection.

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What is a Simple Random Sample?

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A Simple Random Sample is a sampling method where every individual in the population has an equal chance of being selected, ensuring a representative sample.

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What is the purpose of a Control Group in an experiment?

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The Control Group is used as a baseline to compare the effects of the independent variable. It does not receive the treatment being tested.

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What is a Simulation in research?

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A Simulation is a method used to model a real-world process or system to study its behavior under various conditions without conducting real experiments.