New statistic for detecting laboratory effects in ORDANOVA

29 Apr 2020  ·  Takeshita Jun-ichi, Arai Yuto, Ogawa Mayu, Lu Xiao-Nan, Suzuki Tomomichi ·

The present study defines a new statistic for detecting laboratory effects in the analysis of ordinal variation (ORDANOVA). The ORDANOVA is an analysis method similar to one-way analysis of variance for analysing ordinal data obtained from interlaboratory comparison studies... In this paper, we present an approximate continuous distribution for the new statistic for the case of an arbitrary number of ordinal levels, and we demonstrate that $alpha$-percentiles of the distribution are suitable criteria for conducting statistical tests. In addition, a real example involving data from an interlaboratory comparison study is analysed using the proposed statistic. read more

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