The study is based on a large population sample and took into account other possible factors, such as depression, season and levels of physical activity.

这项研究基于大群体样本，并且考察分析了其他可能影响的因素，如忧郁，季节和身体活动水平。

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An array of inferential statistical procedures (methodologies for estimating population parameters based upon sample data) could be fruitfully exploited, but at present are not being applied.

有许多 推论统计步骤（根据样本数据估计总体参数的方法）可以被充分利用，但目前却没有应用它们。

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"We continue to support studies to provide clarity on the use of our drug in this population, " she adds. "But it is really hard to reach a conclusion based on the small sample sizes in this study.

“我们会继续向研究活动提供支持以澄清我们的药物用于这个群体的后果，”她补充道，“但是想通过这样一个小样本量的研究获得确切结论确实比较困难。”

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The technique allows statisticians to make guesses about the size and make-up of a population based on only a small sample.

ECONOMIST: Statistics