Sufficient statistics and intrinsic accuracy

Sufficient statistics and intrinsic accuracy
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DOI:
10.1017/s0305004100019307
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发表时间:
1936-12
影响因子:
0.8
通讯作者:
E. Pitman;J. Wishart
E. Pitman;J. Wishart
中科院分区:
数学2区
文献类型:
--
作者:
E. Pitman;J. Wishart

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证明了如果存在一个充分统计量来估计总体的未知参数,则总体的频率函数必须是某种类型的。它表明,一些修改以前的理论的内在准确性的统计是必要的,当范围的人口抽样是一个函数的参数估计。最后,该理论被扩展到足够的统计集,即统计集,其中一起包含由一个样本提供的关于一个未知参数的所有信息。
It is proved that if there exists a sufficient statistic for the estimation of an unknown parameter of a population, the frequency function of the population must be of a certain type. It is shown that some modification of previous theory of the intrinsic accuracy of statistics is necessary when the range of the population sampled is a function of the parameter to be estimated. Finally, the theory is extended to sufficient sets of statistics, i.e. sets of statistics which together contain all the information provided by a sample about an unknown parameter.