Tetrachoric Correlation: A Permutation Alternative  

Oleh:

Long, Michael A. ; Berry, Kenneth J. ; Mielke, Paul W., (Jr.)

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Educational and Psychological Measurement vol. 69 no. 03 (Jun. 2009), page 429-437.
Topik: tetrachoric correlation coefficient; dichotomous variables; small sample; permutation
Fulltext: 429.pdf (124.38KB)

Isi artikel

An exact permutation test is provided for the tetrachoric correlation coefficient. Comparisons with the conventional test employing Student’s t distribution demonstrate the necessity of using the permutation approach for small sample sizes and/or disproportionate marginal frequency totals.

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