Three teaching methods were tested on a group of 18 students with homogeneous backgrounds in statistics and

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Three teaching methods were tested on a group of 18 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, the students were not equally allocated to each method. The results are shown in Table 14.13.

(a) Test for a difference in distributions of test scores for the different teaching methods using the KruskalWallis test.

(b) If there are differences, explain the differences using a multiple comparison test.image text in transcribed

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Statistical Methods

ISBN: 9780128230435

4th Edition

Authors: Donna L. Mohr, William J. Wilson, Rudolf J. Freund

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