名词
中文翻译：块采样
同义词：
['block sampling', 'block sampling', 'block random sampling']
例句：
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1. In data analysis, block sampling is a technique used to collect representative samples of the population.
在数据分析中，块采样是一种用于收集代表性样本的技术。
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2. The researchers used block sampling to ensure that their sample was representative of the entire population.
研究人员使用块采样确保他们的样本代表了整个人群。
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3. Block sampling is often used in epidemiological studies to minimize bias and ensure accurate results.
块采样常用于流行病学研究中，以减少偏见并确保结果的准确性。