What is a nonparametric test

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Nonparametric Test: The Genetics and IVF Institute conducted a clinical trial of its methods for gender selection. When this textbook was written, 172 of 211 babies born to parents using the YSORT method were boys. If the sign test is used, why is it considered to be a "nonparametric" test of a "distribution-free" test?

Basic Skills and Concepts

Independent Samples: Listed below are skull breadths obtained from skulls of Egyptian males from three different epochs (based on data from Ancient Races of the Thebaid, by Thomson and Randall-Maciver). The Kruskall-Wallis test of equal medians requires independent samples. Are the listed samples independent? Why or why not?

4000 BC- 125  129  131  132  132132  134  135  138  138

1850 BC-129  129  134  134  136  137  137  138  136

150 A.D.-128  136  137  137  138  139  141  142  145

Simple Random Samples: If the Kruskal-Wallis test is to be used with the data in the above exercise, the samples should be simple random samples. What is a simple random sample?

Basic Skills and Concepts

Testing for Bias: The last 103 baseball seasons (as of when this textbook was published) ended with 61 World Series wins by American League teams, compared to 42 wins by National League teams. Can the runs test be used to show that the American League is better because disproportionately more World Series contests are won by American League teams?

Statistical Literacy and Critical Thinking

Nonparametric Test: What is a nonparametric test? What is a parametric test?

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Reference no: EM13781531

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