Observational study or experiment

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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.

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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 an observational study and an experiment?

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The main difference is that in an observational study, the researcher does not intervene or manipulate variables, while in an experiment, the researcher actively manipulates variables.

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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 to see if it 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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Give an example of an observational study.

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A study that observes the eating habits of children and their correlation with obesity rates without any intervention.

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Give an example of an experiment.

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A study where participants are given different diets to see how it affects their blood pressure.

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What does it mean to randomly assign participants in an experiment?

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Random assignment means that participants are assigned to different groups in a way that each participant has an equal chance of being placed in any group, reducing bias.

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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 how the other tested groups compare.

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What is a treatment group?

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