What is a standard deviation?

什么是标准差？

youdao

Overall response time was 1.4 seconds with a standard deviation under 2 seconds.

整体响应时间是1.4秒，并且标准偏差小于2秒。

youdao

You can use it to turn your variance measurement into a standard deviation measurement, as shown in Listing 8.

您可以利用此函数将您的样本方差计算转换为样本标准差计算，如清单8所示。

youdao

It could be normal, everything, that would be a Gaussian, where if you recall there was a mean, and a standard deviation, and most values were going to be close to the mean.

可能是正态分布，也就是高斯分布，只要有平均值和标准偏差值，你就可以进行调用，大部分的值都是集中在平均值附近的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Over this time period, that portfolio had an expected return of something like a little over 9% and it had a standard deviation of a little over 9%.

在这个时间段，这个投资组合的预期收益率是,9%多一点%,标准差是9%多一点。

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7% 77% is class average and the standard deviation was 17% so you can see where things lie. 50% is a pass.

7是平均水平，标准偏差是%,这就是事情所在，50%就及格。

麻省理工公开课 - 固态化学导论课程节选

December is also the least historically volatile month, with a standard deviation of returns of 3.17%.

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It's lost 0.3% a year over three years with a standard deviation of 14%.

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Ideally, reviews and user reviews should generally fall within a standard deviation of each other.

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