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单词
stratified sample
释义
ˌstratified ˈsampling
noun
[
uncountable
]
(
Marketing
营销
)
a method of research in which people from different groups of the population are used in tests to find information about the whole population
(统计的)分层抽样
➡
random sampling
at
random sample
▸
ˌstratified ˈsample
noun
[
countable
]
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