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. $$\begin{array} { | c c c | } \hline { \text { HIGH SCHOOL RECORD } } \\\text { Good } & \text { Fair } & \text { Poor } \\3.21 & 2.87 & 2.01 \\3.65 & 3.05 & 2.31 \\1.00 & 2.00 & 2.98 \\3.12 & 0.00 & 0.50 \\2.75 & 1.98 & 2.36 \\\hline\end{array}$$