In statistics, a statistic is sufficient with respect to a statistical model and its associated unknown parameter if "no other statistic that can be calculated from the same sample provides any additional information as to the value of the parameter".
在统计学中，一个关于一个统计模型和相关的未知参数的充分统计量是指“没有任何其他可以从同一样本中计算得出的统计量可以提供任何有关未知参数的额外信息”。