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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Q. What is the primary difference between parametric and non-parametric tests?

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Q. When might a contingency table be used in an experiment?

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Q. Which type of analysis is used to provide a range of values within which a parameter is likely to fall?

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Q. What is the null hypothesis in an experiment?

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Q. What is the primary purpose of experimental design?

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Q. What is the main advantage of using naturalistic images for icons in an interface design experiment?

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Q. In the context of the icon design experiment, what are the dependent variables?

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Q. What does a within-subjects experimental design involve?

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Q. What is the advantage of using a within-subjects experimental design in the icon design experiment?

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Q. What is the purpose of providing participants with a fixed amount of time to learn the icon meanings before the selection task?

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Q. Which factor does the independent variable represent in the icon design experiment?

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Q. In the icon design experiment, what are the main dependent variables being measured?

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Q. Why is a within-subjects design chosen for the icon design experiment?

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Q. What is the purpose of varying the placement of icons within the blocks on each presentation?

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