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单词
stratified random sample
释义
WordReference Random House Unabridged Dictionary of American English © 2024
strat
′
ified ran
′
dom sam
′
ple,
[
Statistics.
]
Statistics
a random sample of a population in which the population is first divided into distinct subpopulations, or strata, and random samples are then taken separately from each stratum.
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更新时间:2025/7/31 11:42:24