常見例句雙語例句A snowball sampling non-probability sample was used.樣本的取樣方式采取 非機(jī)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.方法采用滾雪球抽樣法和方便抽樣法選取對象，用自行設(shè)計的《同志健康需求評估》問卷開展調(diào)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(diào)查法，透過網(wǎng)絡(luò)采取滾雪球方式抽取二十多所高校的在校大學(xué)生為研究對象。 返回 snowball sampling