The Nonparametric Tests Discussed in Your Book (Wilcoxon Rank Sum

question 160

Multiple Choice

The nonparametric tests discussed in your book (Wilcoxon rank sum test,sign test,Wilcoxon signed rank sum test,Kruskal-Wallis test,and Friedman test) all require that the probability distributions be:

• A)identical except with respect to shape (distribution).
• B)identical except with respect to spread (variance).
• C)identical except with respect to location.
• D)different with respect to location,spread,and shape.

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Definitions:

Top Fifth

Typically refers to the highest 20% of earners or performers in a given distribution, often used in discussions of income inequality.

Income Equality

Income equality refers to a situation where earnings are distributed evenly across the population, minimizing disparities between the richest and poorest individuals.

Efficiency

The optimal use of resources to achieve the desired output with minimal waste or effort.

Negative Income Tax

A welfare system in which individuals earning below a certain income threshold receive supplemental pay from the government instead of paying taxes.