Use a Kruskal-Wallis Test to Test the Claim That the Samples

question 31

Essay

Use a Kruskal-Wallis test to test the claim that the samples come from populations with equal
medians. Listed below are grade averages for randomly selected students with three different
categories of high-school background. At the 0.05 level of significance, test the claim that the
three groups have the same median grade average. $$\begin{array}{l}\text { HIGH SCHOOL RECORD }\\\begin{array} { c c c } \text { Good } & \text { Fair } & \text { Poor } \\\hline 3.21 & 2.87 & 2.01 \\3.65 & 3.05 & 2.31 \\1.00 & 2.00 & 2.98 \\3.12 & 0.00 & 0.50 \\2.75 & 1.98 & 2.36\end{array}\end{array}$$

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Definitions:

Psychological Disorders

Mental disorders characterized by patterns of behavior or thoughts that are significantly distressing or impairing in daily functioning.

World Health Organization

A specialized agency of the United Nations responsible for international public health.

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Neurotransmitter imbalances involve irregular levels of chemical messengers in the brain, which can affect mood, behavior, and cognitive functions.