A random sample of 30 stocks was selected from each of the three
major U.S. exchanges...
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A random sample of 30 stocks was selected from each of the threemajor U.S. exchanges and their performance over the previous yearwas noted. The median performance for all 90 stocks was noted andthe following table constructed, Exchange Median New York 18American 17 NASDAQ 10 Was there a significant difference in theperformance of stocks on the three exchanges during the previousyear?
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To Chi square test for independence is used to test thesignificance of the medianStep 1 The hypothesis for the test is defined asHo There is no difference in medians such that all the mediansare
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