
subsample
词源
Derived from the prefix 'sub-' (meaning 'under' or 'partial') and 'sample' (from Old French 'essample', meaning 'example' or 'specimen').
noun
❶ 从整体样本中抽取的一部分样本,通常用于统计分析或研究,以减少数据量或提高效率。
“The researchers used a subsample of 100 patients for their preliminary analysis.”
(研究人员使用了100名患者的子样本进行初步分析。)
“A subsample of the soil was sent to the lab for testing.”
(土壤的一部分样本被送到实验室进行检测。)
verb
❶ 从更大的样本中抽取一部分数据或材料,通常用于分析或测试。
“The lab technician will subsample the blood for further testing.”
(实验室技术员将抽取部分血液样本进行进一步测试。)
“To save time, we decided to subsample the data before running the full analysis.”
(为了节省时间,我们决定在完整分析前对数据进行子采样。)
常见短语
random subsample — 从总体中随机抽取的一部分样本,确保结果具有代表性。
“A random subsample of 50 participants was chosen for the follow-up study.”
(随机抽取了50名参与者的子样本用于后续研究。)
representative subsample — 能够反映整体特征的一部分样本,常用于统计分析。
“The representative subsample accurately reflected the diversity of the population.”
(这个代表性子样本准确反映了人口的多样性。)