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Physical Sciences and Mathematics Commons™

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Statistics and Probability

Wayne State University

Journal

2020

Missing data

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Full-Text Articles in Physical Sciences and Mathematics

Almost All Missing Data Are Mnar, Thomas R. Knapp Sep 2020

Almost All Missing Data Are Mnar, Thomas R. Knapp

Journal of Modern Applied Statistical Methods

Rubin (1976, and elsewhere) claimed that there are three kinds of “missingness”: missing completely at random; missing at random; and missing not at random. He gave examples of each. The article that now follows takes an opposing view by arguing that almost all missing data are missing not at random.

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