Experimental Design

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What is experimental design?

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Experimental design is a structured approach to planning experiments that allows researchers to test hypotheses and determine cause-and-effect relationships by manipulating variables.

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What is a comparative investigation?

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A comparative investigation is a type of research that compares two or more groups to identify differences or similarities, often without manipulating any variables.

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What is descriptive research?

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Descriptive research is a method that aims to provide a detailed account of a phenomenon, describing characteristics without manipulating variables or establishing cause-and-effect relationships.

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What is the purpose of a control group in an experiment?

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A control group serves as a baseline that researchers can compare against the experimental group to determine the effect of the independent variable.

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What does it mean to manipulate variables in research?

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Manipulating variables involves changing one or more factors in an experiment to observe the effect on a dependent variable.

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What is blinding in experimental design?

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Blinding is a technique used to prevent bias in research by keeping participants or researchers unaware of which group participants belong to (control or experimental).

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What is the difference between qualitative and quantitative research?

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Qualitative research focuses on understanding concepts and experiences through non-numerical data, while quantitative research involves numerical data and statistical analysis.

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What is a case study?

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A case study is an in-depth analysis of a single case or a small number of cases, providing detailed insights but lacking a control group.

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What is the significance of randomization in experimental design?

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Randomization helps eliminate bias by ensuring that each participant has an equal chance of being assigned to any group, enhancing the validity of the results.

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What is the role of hypothesis in experimental research?

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A hypothesis is a testable statement predicting the relationship between variables, guiding the research design and analysis.