The margin of error was plus or minus three percentage points.
误
度大约
三个百
。
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语精选
语版 TED-Ed 演讲精选 In statistics, pi is used in the equation to calculate the area under a normal distribution curve; which comes in handy for figuring out distributions of standardized test scores, financial models, or margins of error in scientific results.
在统计学中,π 可代入等式中用来计算正态分布曲线下的面积;在计算标准化考试分数、财务模型或科学结果的
范围时都会用到。