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Unformatted text preview: Outline Nonparametric Methods Paired Data Lecture 29 Chapter 10: Comparing Two Populations Michael Akritas Michael Akritas Lecture 29 Chapter 10: Comparing Two Populations Outline Nonparametric Methods Paired Data Nonparametric Methods The RankSum Test Procedure Paired Data The Contrast Method The Signed Rank Test Michael Akritas Lecture 29 Chapter 10: Comparing Two Populations Outline Nonparametric Methods Paired Data The RankSum Test Procedure Motivation Michael Akritas Lecture 29 Chapter 10: Comparing Two Populations Outline Nonparametric Methods Paired Data The RankSum Test Procedure Motivation I The contrastbased procedures require large sample sizes. Michael Akritas Lecture 29 Chapter 10: Comparing Two Populations Outline Nonparametric Methods Paired Data The RankSum Test Procedure Motivation I The contrastbased procedures require large sample sizes. I The MannWhitneyWilcoxon ranksum test (or ranksum test for short), which will be described, can be used with both small and large sample sizes. Michael Akritas Lecture 29 Chapter 10: Comparing Two Populations Outline Nonparametric Methods Paired Data The RankSum Test Procedure Motivation I The contrastbased procedures require large sample sizes. I The MannWhitneyWilcoxon ranksum test (or ranksum test for short), which will be described, can be used with both small and large sample sizes. I If the two populations are continuous, the null distribution of the TS is known even with very small sample sizes. Michael Akritas Lecture 29 Chapter 10: Comparing Two Populations Outline Nonparametric Methods Paired Data The RankSum Test Procedure Motivation I The contrastbased procedures require large sample sizes. I The MannWhitneyWilcoxon ranksum test (or ranksum test for short), which will be described, can be used with both small and large sample sizes. I If the two populations are continuous, the null distribution of the TS is known even with very small sample sizes. I For discrete populations, the null distribution of the TS can be well approximated with much smaller sample sizes than those required by contrastbased procedure. Michael Akritas Lecture 29 Chapter 10: Comparing Two Populations Outline Nonparametric Methods Paired Data The RankSum Test Procedure Motivation I The contrastbased procedures require large sample sizes. I The MannWhitneyWilcoxon ranksum test (or ranksum test for short), which will be described, can be used with both small and large sample sizes. I If the two populations are continuous, the null distribution of the TS is known even with very small sample sizes. I For discrete populations, the null distribution of the TS can be well approximated with much smaller sample sizes than those required by contrastbased procedure....
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This note was uploaded on 03/19/2009 for the course STAT 401 taught by Professor Akritas during the Spring '00 term at Penn State.
 Spring '00
 Akritas

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