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Kruskal-Wallis Test: Difference in Distributions

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Three teaching methods were tested on a group of 19 students with homogeneous Backgrounds in statistics and comparable aptitudes. Each student was randomly assigned to a method and at the end of a 6-week program was given a standardized exam. Because of classroom space and group size, the students were not equally allocated to each method. The results are shown in the table below.

METHOD 1 94 87 90 74 86 97
METHOD 2 82 85 79 84 61 72 80
METHOD 3 89 68 72 76 69 65

Test for a difference in distributions (medians) of the test scores for the different teaching methods using the Kruskal-Wallis test.

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Solution Summary

Kruskal Wallis test problem using students taking an exam and solution is provided.

Solution Preview

Please find the solution attached.

To perform non-parametric test - Kruskal Wallis Test Using SPSS.
Step 1: Open SPSS package
Step 2: Enter the data in the DATA VIEW and its corresponding variables in VARIABLE VIEW.
Step 3: Click value and assign values to teaching methods.
Step 4: Now to perform the analysis, select ANALYSE in ...

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