...试剂:仪器未校正,使用不当,发生故障;试剂未标准化;4)非试验性外环境因素:气象;照明;震动;声响(一) 样本含量 ( size of sampling )1)影响 样本含量 的因素:1)精确性:即容许误差越小, 样本含量 越大 2)预计现患率:其越高, 样本含量 越小 (2)确定 样本含量 的方法...
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The population sampling survey, conducted by Shanghai Municipal Statistics Bureau, reveals a rapid rise in the size of the unmarried population, especially women.
上海市统计局开展的一项人口抽样调查显示,上海未婚人口数量正在迅速上升,尤其是未婚女性数量。
Thus, you can use a sampling to effectively reduce the number of records being evaluated by the rule itself by, and reduce the size of the output.
这样,就可以利用抽样来很有效地减少规则所评估的记录的数量,并减少输出量。
Kyodo did not give a margin of error, but a poll of that size would normally have a five percentage point sampling error.
共同社没有提供误差幅度,但是,该规模的投票通常有5个百分点的抽样误差。
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