And so we have to be really careful when we're actually saying that we're seeing the gravitational waves and we have between a three sigma and a four sigma detection.
因此，说看到引力波时我们必须非常小心。我们的探测结果介于 3 西格玛和 4 西格玛之间。
Three sigma
原声例句
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Standard deviation
In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values. A low standard deviation indicates that the data points tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the data points are spread out over a wider range of values.
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