You can't think out a number to describe the twenty-five standard deviation event; it's just too large a number for any of us to comprehend.

你无法想出一个数字来描述25个标准差事件；这个数字太大了，我们任何人都无法理解。

The Six Sigma Black Belt should be able to compute the mean and standard deviation from a grouped frequency distribution.

六西格玛黑带应该能够计算出一个分组发生频次分布数据的均值和标准偏差。

What's the deal with standard deviation?

标准偏差又是怎么回事呢？

Especially if there is a small standard deviation.

特别是当标准偏差值很小的情况。

And you can calculate the standard deviation that way.

你可以用这种方法计算标准偏差。