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    Article

    Conditional information for an inverse Gaussian distribution with known coefficient of variation

    Conditional inference about a mean of an inverse Gaussian distribution with known coefficient of variation is discussed. For a random sample from the distribution, sufficient statistics with respect to the mea...

    Katuomi Hirano, Kōsei Iwase in Annals of the Institute of Statistical Mathematics (1989)

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    Article

    Estimation for a scale parameter with known coefficient of variation

    A loss function proposed by Wasan (1970) is well-fitted for a measure of inaccuracy for an estimator of a scale parameter of a distribution defined onR +=(0, ∞). We refer to this loss func...

    Koji Kanefuji, Kosei Iwase in Statistical Papers (1998)

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    Chapter and Conference Paper

    Estimation of the Fifth Percentile Using a Subset of Order Statistics

    Estimation of the fifth percentile using a subset of order statistics is closely related to the water quality standards in the United States. We focus on the subsample size to estimate it. Because the possibil...

    Kōsei Iwase, Koji Kanefuji in Measurement and Multivariate Analysis (2002)

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    Article

    A study on the utilization of the Youden plot to evaluate proficiency test results

    Methods of utilizing the Youden plot obtained from interlaboratory comparison tests are proposed. The Youden plot is a powerful tool for visually evaluating between- or within-laboratory errors. However, there...

    Katsuhiro Shirono, Kosei Iwase, Hiroshi Okazaki… in Accreditation and Quality Assurance (2013)