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2013-05-23 12:21
求翻译：The level of precision is the closeness with which the sample predicts where the true values in the population lie. The difference between the sample and the real population is called the sampling error. If the sampling error is ±3%, this means we add or subtract 3 percentage points from the value in the survey to find是什么意思？ 待解决
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The level of precision is the closeness with which the sample predicts where the true values in the population lie. The difference between the sample and the real population is called the sampling error. If the sampling error is ±3%, this means we add or subtract 3 percentage points from the value in the survey to find
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