The dilemma of negative analysis of vari
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C. S. Wang; B. S. Yandell; J. J. Rutledge
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Article
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1992
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Springer
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English
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At least two common practices exist when a negative variance component estimate is obtained, either setting it to zero or not reporting the estimate. The consequences of these practices are investigated in the context of the intraclass correlation estimation in terms of bias, variance and mean squar