A nonparametric procedure for testing partially ranked data |
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Authors: | Jyh-Shyang Wu |
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Affiliation: | Department of Mathematics, Tamkang University, New Taipei City, Taiwan |
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Abstract: | In consumer preference studies, it is common to seek a complete ranking of a variety of, say N, alternatives or treatments. Unfortunately, as N increases, it becomes progressively more confusing and undesirable for respondents to rank all N alternatives simultaneously. Moreover, the investigators may only be interested in consumers’ top few choices. Therefore, it is desirable to accommodate the setting where each survey respondent ranks only her/his most preferred k (k?N) alternatives. In this paper, we propose a simple procedure to test the independence of N alternatives and the top-k ranks, such that the value of k can be predetermined before securing a set of partially ranked data or be at the discretion of the investigator in the presence of complete ranking data. The asymptotic distribution of the proposed test under root-n local alternatives is established. We demonstrate our procedure with two real data sets. |
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Keywords: | Anderson’s test partially ranked data chi-square test imposed rank contingency table U-statistics root-n local alternatives |
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