But she cautioned that so few people in the survey reported robberies that the bureau cannot be certain whether those figures represent a true increase or a random sampling variation.
但她警告说，调查中向警察报告抢劫案的人太少了，这使得统计局无法确定这些数据是真实增加了还是只是一个随机的变量。
Although the cumulative dip plot method can improve resolution of fine dip variation, it will induce pseudomorph as sampling is not even in depth.
累积倾角交汇图法可以提高对倾角细微变化的分辨率，但在取样深度不均匀时容易产生假象；
On a limited sampling, the single-operator coefficient of variation has been found to be 9.1 %.
根据有限取样，发现每个操作员试验结果的变化系数为9.1 %。
Also the results showed that the Stratified Random ClusterSampling is an adequate sampling method for the genetic variation analysis of yellow cattle population.
同时研究表明，系统随机整群抽样是进行黄牛群体遗传变异分析的最适抽样方法。
Based on production investigation and sampling data by fishing vessel in 2005, composition and monthly variation of by-catch were analysed with data analysis tool of Microsoft Excel.
根据2005年渔业资源监测船生产调查资料和现场取样数据，运用数理统计方法分析了虾拖网副渔获组成及其月份变化等。
There are many factors that influence the sampling error, such as, extent of mark variation, amount of sample unit and the choice of sampling method, etc.
影响抽样误差大小有很多因素，如标志变异程度，样本单位数量的多少，抽样方式方法的选择等。
Along with sampling scale increasing, the coefficient of variation increased gradually.
随采样幅度尺度的增大，变异系数呈逐渐增大的趋势。
Using the Poisson sampling, the sampling process is more random, and it can show RTT variation character well.
采用泊松采样使得采样过程更加随机，更能体现RTT的变化特征。
Digital filtering technique based on least square method multichannel sampling technique and frequency variation sampling technique were used experimentally.
实验应用了基于最小二乘法的数字滤波技术、多通道采样技术、变频率采样技术。
Digital filtering technique based on least square method, multichannel sampling technique and frequency variation sampling technique were used experimentally.
实验应用了基于最小二乘法的数字滤波技术、多通道采样技术、变频率采样技术。
We use L. virgaurea, one of the species in Ligularia Cass, and research the intra-inflorescence variation in flowers and seeds by sampling and investigate in field.
本研究将菊科植物黄帚橐吾作为研究材料，通过野外调查采样对其进行了花与果实的花序内变异研究。
Finally, a heart rate variation (HRV) sampling and analyzing system is introduced as an example.
最后，介绍了心率变异(HRV)信号采集、处理的实现。
The number of sampling points on variation of forest soil were determined for given estimating precisions of dynamic state of forest soil water.
为了保证土壤水分动态的测定精度对森林土壤水分变异性进行了研究，以合理确定样点数。
Researchers neglected the influence of sampling error, and small samples from F2 populations further reduced the variation. These deficiencies may result in wrong conclusions.
研究者对抽样误差的影响估计不足，所谓F2株系的小样本抽样，又进一步缩小了株系内变异程度，这就有可能出现假阳性的结果。
Researchers neglected the influence of sampling error, and small samples from F2 populations further reduced the variation. These deficiencies may result in wrong conclusions.
研究者对抽样误差的影响估计不足，所谓F2株系的小样本抽样，又进一步缩小了株系内变异程度，这就有可能出现假阳性的结果。
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