在统计学中,从一个总体获取样品。 In statistics, obtaining a sample from a population.
生物统计学分析生物和医学数据的应用统计 Application of statistics to the analysis of biological and medical data.
人口统计学对人口特征,例如数量、增长情况、密度、分布和人口动态统计等进行研究的学科 The study of the characteristics of human populations, such as size, growth, density, distribution, and vital statistics.
她在大学学习统计学。 She's studying statistics at university.