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<p>Baker (<CitationRef CitationID="CR1">2026</CitationRef>) proposes a new model for count data. But none of the properties discussed (the probability mass function, moments and the moment generating functions) in the general case are in closed form. In this letter, we derive closed form expressions for the probability mass function, moments and the moment generating functions in the general case.</p>

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Letter to the editors

  • 期刊论文

  • 发表日期：

    2026年3月24日

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  • Saralees Nadarajah,
  • Tibor K. Pogány

摘要

Baker (2026) proposes a new model for count data. But none of the properties discussed (the probability mass function, moments and the moment generating functions) in the general case are in closed form. In this letter, we derive closed form expressions for the probability mass function, moments and the moment generating functions in the general case.