The 2 sigma comes from two standard deviation, sigma, the symbol for standard deviation.

2 sigma 来自两个均方差，sigma 是均方差符号。

When I started this channel I made a highly criticized video about an idea called the sigma male.

当我开始这个频道时，我制作了一个备受批评视频，讲述了一个叫做西格玛男想法。

This could apply to females as well, of course, called the 'sigma female'.

这也适，当然，被称为“西格玛”。

So this is the capital Greek letter sigma right over here, it's shorthand math, math shorthand for sum.

这是大写希腊字母，它是数学中总简写。

Four sigma is like one in 10,000 chance that it's just noise that created this correlation across the pulsars.

“4 西格玛”指是“噪声是造成脉冲星之间相关因”几率为万分之一。

And a long string of sequential terms added together is collapsed into a capital sigma.

一长串连续项加在一起被折叠成一个大写西格玛。

This straightforward sort of bond is called a sigma bond.

这种简单债券称为 sigma 债券。

The sp orbital, the one that forms the sigma bonds here, is linear.

在这里形成西格玛键 sp 轨道是线。

Fx bar given mu and sigma squared.

Fx bar 给定 mu sigma 平方。

All the points for the 1 and 2 sigma shifts are above the average this time.

此次 1 2 西格玛偏移所有点均高平均值。

He considered shifts of 2, 3, 4, 5 and 6 sigma.

他考虑了 2、3、4、5 6 西格玛转变。

As they come together for the bond, the sigma bonds will occur between the hybridized orbitals.

当它们聚在一起形成键时， σ键将出现在杂化轨道之间。

And if you've done the calculus playlists already, sigma notation is really like a discrete integral on some level.

如果你已经完成了微积分播放列表，sigma 符号在某种程度上真就像一个离散积分。

This is simply each source of variation's six sigma spread divided by the total six sigma spread.

这只是每个变异源 6 sigma 分布除以总 6 sigma 分布。

But my prior isn't going to use any information about sigma squared.

但是我先验不会使任何关 sigma squared 信息。

He did not include the 1 sigma shift.

他没有包括 1 西格玛转变。

And now, I think, you understand why variance is written as sigma squared.

现在，我想，你明白为什么方差被写成 sigma 平方。

Double bonds consist of a sigma bond and a pi bond.

双键由西格玛键π键组成。

Each zone has a width of one sigma.

每个区域宽度为 1 西格玛。

That pi bond bridges the sigma bond, locking it in place.

那个 pi 键桥接 sigma 键，将它锁定到位。