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Exact χ2Criterion Tables with Cell Expectations One: An Application to Coleman's Measure of Consensus

 

作者: DouglasA. Zahn,   GailC. Roberts,  

 

期刊: Journal of the American Statistical Association  (Taylor Available online 1971)
卷期: Volume 66, issue 333  

页码: 145-148

 

ISSN:0162-1459

 

年代: 1971

 

DOI:10.1080/01621459.1971.10482235

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The usual χ2goodness-of-fit criterion is considered when all cells have expectations of one and the cell boundaries are not estimated from the data. This situation arises in the use of a measure of consensus proposed by Coleman [1]. Under these circumstances the criterion reduces to X2= Σt=1Nni2−N, where niis the number of observations in cell i and N is the total number of observations in the sample. The exact distribution of X2is given for N = 1(1)25(5)40, 50. For N≥25, the χ2approximation to the exact distribution of X2errs by less than .007 or 20.3 percent for right-tail areas. For left-tail areas the errors are less than .0165 or 89.9 percent when N≥25.

 

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