名词
中文翻译：内部有效性
同义词：
['internal consistency', 'internal reliability', 'internal validity']
例句：
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1. The study found that the new drug had a high level of internal validity.
研究发现，这种新药具有很高的内部有效性。
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2.The researcher conducted an experiment to test the hypothesis that internal validity is essential for scientific findings.
研究者进行了一项实验，以检验这一假设：内部有效性对于科学研究结果至关重要。
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3. The data collected during the experiment was carefully analyzed to ensure that the results were internally valid.
在实验过程中收集的数据得到了仔细分析，以确保结果具有内部有效性。