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

Question

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

Quizplus · Accepted Answer

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

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