名词
中文翻译：组合标准差
同义词：
['composite standard deviation', 'combined variance']
例句：
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1. The team's performance is significantly improved compared to last year's combined standard deviation.
与去年相比，该团队的表现有了显著提升。
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2. The researchers used a combination of statistical methods to calculate the combined standard deviation.
研究人员采用了多种统计方法来计算组合标准差。
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3. In this study, we calculated the combined standard deviation for each group of data points.
在这项研究中，我们计算了每组数据点的组合标准差。