observational Vs Experimental Design

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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 or outcomes without manipulating any variables.

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What is an experiment?

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An experiment is a research method where the researcher manipulates one or more variables to determine their effect on a dependent variable.

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What is the main difference between observational studies and experiments?

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The main difference is that experiments involve imposing a treatment, while observational studies do not.

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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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What is a sample in research?

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

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What is random assignment in experimental design?

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Random assignment is the process of assigning participants to different groups in an experiment using randomization to ensure each participant has an equal chance of being placed in any group.

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What is a control group?

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A control group is a group in an experiment that does not receive the treatment or intervention, used as a benchmark to measure the effects of the treatment.

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What is a treatment group?

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A treatment group is a group in an experiment that receives the treatment or intervention being tested.

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What is the purpose of a hypothesis in research?

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A hypothesis is a testable prediction about the relationship between two or more variables.

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What is a variable in research?

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A variable is any factor, trait, or condition that can exist in differing amounts or types.