Two–step sequential sampling

J. J. A. Moors; L. W. G. Strijbosch

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Two–step sequential sampling

机译：两步顺序采样

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Choosing the sample size in advance is a familiar problem: often, additional observations appear to be desirable. The final sample size then becomes a random variable, which has rather serious consequences.Two such sample extension situations will be considered here. In the first situation, the observed sample variance determines whether or not to double the original sample size. In the second situation, the variances observed in two independent samples are compared; their ratio determines the number of additional observations.

机译：预先选择样本大小是一个熟悉的问题：通常，需要其他观察结果。最终的样本大小将成为一个随机变量，这将带来非常严重的后果。这里将考虑两种此类样本扩展情况。在第一种情况下，观察到的样本差异决定是否将原始样本大小加倍。在第二种情况下，比较了两个独立样本中观察到的方差。它们的比率决定了附加观察的数量。

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来源
《Statistica neerlandica》 |2002年第3期|270-284|共15页
作者
J. J. A. Moors; L. W. G. Strijbosch;
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作者单位

Tilburg University The Netherlands;

Tilburg University The Netherlands;

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原文格式 PDF
正文语种 eng
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关键词
estimation bias; extended sampling; sample extension; stochastic sample size; two–step sampling; variance estimation;

机译：估计偏差;扩展采样;样本扩展;随机样本大小;两步采样;方差估计;

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Two–step sequential sampling

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