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Sample size requirements to test the equality of raters' precision

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  • M. M. Shoukri
  • O. Demirkaya

Abstract

Exact and approximate methods are developed to calculate the required number of subjects n in a repeatability study, where repeatability is measured by the precision of measurements made by a rater. The exact method is based on power calculations under the non-null distribution of the multiple coefficient of determination, which requires intensive numerical computation. The approximate method is based on predictions from families of non-linear curves fitted by the method of least squares.

Suggested Citation

  • M. M. Shoukri & O. Demirkaya, 2000. "Sample size requirements to test the equality of raters' precision," Journal of Applied Statistics, Taylor & Francis Journals, vol. 27(4), pages 483-494.
    • Handle: RePEc:taf:japsta:v:27:y:2000:i:4:p:483-494
    DOI: 10.1080/02664760050003669
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