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

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. $$\begin{array}{l}\text { HIGH SCHOOL RECORD }\\\begin{array} { | l | } \hline \text { Good FairPoor } \\3.212 .872 .01 \\3.653 .052 .31 \\1.002 .002 .98 \\3.120 .000 .50 \\2.751 .982 .36 \\\hline\end{array}\end{array}$$