The Kruskal-Wallis Test Statistic Can Be Approximated by a Chi-Squared

question 6

Multiple Choice

The Kruskal-Wallis test statistic can be approximated by a Chi-squared distribution with k - 1 degrees of freedom (where k is the number of populations) whenever the sample sizes are all greater than or equal to:

• A) 30
• B) 20
• C) 10
• D) 5

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Definitions:

Functional Fixedness

A cognitive bias that limits a person to using an object only in the way it is traditionally used, hindering problem-solving.

Availability Heuristic

A cognitive shortcut based on the first instances that pop into someone's mind upon assessing a particular subject, idea, technique, or choice.

Functional Fixedness

A psychological inclination that constrains someone to applying an artifact only in its accepted traditional role, thereby stifling creative thought and problem resolution.

Availability Heuristic

A mental shortcut that relies on immediate examples that come to a person's mind when evaluating a specific topic, concept, method or decision.