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

question 79

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:

Proteins

Large molecules made up of amino acids that perform a variety of functions in the body, such as catalyzing metabolic reactions and supporting cell structure.

Alleles

Variants of a gene that arise by mutation and are found at the same place on a chromosome.

Heterozygous

Having two different alleles for the same trait.

Genetic Mutations

Permanent alterations in the DNA sequence that make up a gene, resulting in the gene functioning differently than normal.