Yet random sampling is a vital part of statistical analysis .
但是随机抽样恰恰是统计分析的核心部分。
Regular sampling and tests are carried out on both sides of the border by government agencies .
香港和广东的政府机构会在两地对这些农场进行定期抽样和检测。
The two basic sampling methods in use today are probabilistic and non_probabilistic sampling .
目前使用的两种抽样的基本方法是概率抽样和非概率抽样。
Public-health officials already conduct random sampling , so getting the participants to name a few friends too should not be onerous .
公共卫生官员已经可以随机抽样,那么让样本个体说出几个朋友的名字应该也没什么麻烦。
In these studies , 7 different methods for sampling bees were used and bees were sampled on 3 different continents .
这些研究包括3个不同大陆的蜂类调查共涉及到了7种抽样调查蜂类的方法。
Sampling by sector-based indices often excludes notable investment opportunities .
行业指数的采样做法经常会排除重要的投资机会。
In addition to sampling error , question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of survey data .
除了采样误差,在调查中提问的措辞和一些实际困难也会导致在采集数据中产生误差或偏差。
And statistical controls are unlikely to compensate for a poor sampling strategy that does not yield a sample representative of the population to which we want to generalize .
一个差劲的采样策略并不能产生一个我们需要的代表总体的样本,而统计管理不太可能弥补这一点。
Much of the emergent infrared laser light travels back towards the uv laser , sampling the intervening air as it returns .
大部分自发的红外激光都返向射向紫外激光器,并在它返回时将途经的空气进行取样。
Sampling the signal at a rate much higher than needed to satisfy nyquist helps avoid " aliasing " - the step-like edges to diagonal lines in images caused by a sensor 's square pixels .