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Inventing Research Problems

The one I need the most help with is no. 5. Don't worry about nos. 1-4. Thx.

Research design has the purpose of obtaining answers to research questions and controlling variance.
(1) Explain what this statement means.
(2) How does a research design control variance?
(2) Why should a factorial design control more variance than a one-way design?
(3) How does a design that uses matched participants or repeated measures of the same participants control variance?
(4) What is the relation between the research questions and hypotheses and a research design?
(5) Invent a research problem to illustrate your answers to these questions.

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Solution Summary

Assistance is provided to help invent a research problem.