研究团队先在不同年龄层抽样,再对结果进行加权处理。Yánjiū tuánduì xiān zài bùtóng niánlíngcéng chōuyàng, zài duì jiéguǒ jìnxíng jiāquán chǔlǐ.The research team first sampled across different age groups, then weighted the results.
工厂每天都会从产品中抽样检测。Gōngchǎng měitiān dōu huì cóng chǎnpǐn zhōng chōuyàng jiǎncè.The factory samples products for testing every day.
这次调查是随机抽样的,结果比较可靠。Zhè cì diàochá shì suíjī chōuyàng de, jiéguǒ bǐjiào kěkào.This survey used random sampling, so the results are fairly reliable.