Sample size requirements to test the equality of raters' precision
M. M. Shoukri and
Journal of Applied Statistics, 2000, vol. 27, issue 4, 483-494
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.
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