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Random sampling: random sample of 50 boys, 50 girls were 100 students conducted a questionnaire survey.
随机抽样：随机抽取50名男生，50名女生共100名学生进行问卷调查。
youdao
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Random sampling: random sample of 50 boys, 50 girls were 100 students conducted a questionnaire survey.
随机抽样：随机抽取50名男生，50名女生共100名学生进行问卷调查。
youdao