Q. If an experiment investigates the impact of both font size and color on user reading speed, how many independent variables are there?

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Q. What characteristic must a dependent variable possess in an experiment?

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Q. What is a hypothesis in an experimental evaluation?

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Q. What is the purpose of the null hypothesis in an experiment?

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Q. In experimental design, what is the role of the control condition?

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Q. What is a between-subjects experimental design?

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Q. What is an important consideration when choosing participants for an experiment?

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Q. In a between-subjects experimental design, why is each participant exposed to only one experimental condition?

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Q. What is a potential disadvantage of a within-subjects experimental design?

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Q. How can the issue of transfer of learning effects be mitigated in a within-subjects experimental design?

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Q. What is a mixed design in experimental research?

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Q. Why is the choice of a statistical test important in experimental analysis?

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Q. What is the purpose of looking at the data before conducting statistical tests in an experiment?

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Q. Why is saving the original data important in experimental analysis?

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Q. What distinguishes a discrete variable from a continuous variable?

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Q. In the context of interface experiments, why is the independent variable usually considered discrete?

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Q. What is the primary purpose of conducting statistical tests in experimental analysis?

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Q. What is the dependent variable in an experiment?

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Q. Which distribution is commonly associated with parametric tests?

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Q. Under what conditions are parametric tests considered robust?

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