Observational study or experiment

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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. It does not involve any intervention.

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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, often involving control and experimental groups.

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What is the main difference between observational studies and experiments?

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The main difference is that observational studies do not involve manipulation of variables, while experiments do.

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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 being tested, allowing for comparison with the experimental group.

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What is an experimental group?

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

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What does random assignment mean in research?

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Random assignment is the process of assigning participants to different groups in a study randomly, ensuring that each participant has an equal chance of being placed in any group.

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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 in research.

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What is a dependent variable?

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A dependent variable is the outcome or response that is measured in an experiment, which is affected by changes in the independent variable.

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What is an independent variable?

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An independent variable is the factor that is manipulated or changed in an experiment to observe its effect on the dependent variable.

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What is a hypothesis?

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