random sampling

常见例句

Methods:The peasant-workers were random-sampling surveyed by SCL-90 and SWLS.
方法：采用SCL-90量表和SWLS量表进行随机抽样调查。
Methods Using the same protocol and questionnaire, performing cluster-random-sampling survey for the population aged over 40 years in Liwang district of Guangzhou.
方法采用统一调查表格，以整群随机抽样方法，调查年龄在40岁以上的人群，并进行肺通气功能检测。
By using the simple random-sampling method, this paper researches on the influence of the mark plants before the entry point of superhighway's ramp on the responding time of the driver.
采用简单随机取样法，研究了高速公路匝道入口前的标志植物对驾驶员反应时间的影响。

MessageLabs, the email-filtering company that Symantec acquired in 2008, posted a set of word maps today measuring the frequency of terms in spam emails from a random one-week sampling of junk mail pulled from the most prolific spam-spewing botnets.
FORBES: The Most Common Words In Spam Email
Public-health officials already conduct random sampling, so getting the participants to name a few friends too should not be onerous.
ECONOMIST: Epidemiology: Infectious personalities The
What if you could perform fraud-detection analytics across all of your transactions in real time, instead of across just a random sampling of only a few percent of all those transactions?
FORBES: The Biggest Big-Data Opportunities: How to Choose the Right One