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- W1998221431 abstract "The Wilks’ Lambda Statistic (likelihood ratio test, LRT) is a commonly used tool for inference about the mean vectors of several multivariate normal populations. However, it is well known that the Wilks’ Lambda statistic which is based on the classical normal theory estimates of generalized dispersions, is extremely sensitive to the influence of outliers. A robust multivariate statistic for the one-way MANOVA based on the Minimum Covariance Determinant (MCD) estimator will be presented. The classical Wilks’ Lambda statistic is modified into a robust one through substituting the classical estimates by the highly robust and efficient reweighted MCD estimates. Monte Carlo simulations are used to evaluate the performance of the test statistic under various distributions in terms of the simulated significance levels, its power functions and robustness. The power of the robust and classical statistics is compared using size-power curves, for the construction of which no knowledge about the distribution of the statistics is necessary. As a real data application the mean vectors of an ecogeochemical data set are examined." @default.
- W1998221431 created "2016-06-24" @default.
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- W1998221431 date "2010-01-01" @default.
- W1998221431 modified "2023-09-24" @default.
- W1998221431 title "Robust statistic for the one-way MANOVA" @default.
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- W1998221431 doi "https://doi.org/10.1016/j.csda.2009.08.015" @default.
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