snowball sampling

常见例句

A snowball sampling non-probability sample was used.
樣本的取樣方式採取非機率型之滾雪球抽樣法。
Methods Convenience sampling and snowball sampling were used to select respondents; questionnaire was used during the research.
方法採用滾雪球抽樣法和方便抽樣法選取對象，用自行設計的《同志健康需求評估》問卷開展調查。
Questionnaire survey was used in this research, and researchers selected college students from more than 20 universities of China as research participants through snowball sampling on Internet.
方法：問卷調查法，透過網絡採取滾雪球方式抽取二十多所高校的在校大學生爲研究對象。