Let's say 2.79 is the standard deviation.

假设2.79是标准偏差。

And the standard deviation is 0.5.

标准偏差为 0.5。

The second is to estimate the standard deviation of the measurement system.

第二是估计测系统的标准偏差。

So it's going to have a smaller standard deviation.

所以它的标准偏差会更小。

The other purpose is to estimate the standard deviation of the measurement system.

另一个目的是估计测系统的标准偏差。

You can also compare the standard deviation to the specification range.

您还可以将标准偏差与规格范围进行比较。

Most of the time, the precision of a measurement system is reported as an estimated standard deviation.

大多数时候， 测系统的精度以估计标准偏差的形式报告。

The standard deviation maybe would look-- it would be that far and that far above and below the mean.

标准偏差可能会看起来——它会远远高于和低于平均值。

And if you take its square root for the standard deviation, which is what we do right here, it's 0.49.

如果你用它的平方根来表示标准偏差，这就是我们在这里所做的， 它是 0. 49。

And that equaled 1 over the standard deviation.

这等于标准偏差的 1。

Since the range chart is in control, we can estimate the measurement system standard deviation.

由于范围图处于控制之中， 我们可以估计测系统的标准偏差。

So in this situation the standard deviation is the square root of 25.

所以在这种情况下，标准偏差是 25 的平方根。

So I say the probability of 45 left moves is equal to 1 over the standard deviation.

所以我说 45 次向左移动的概率等于标准偏差的 1。

Determine the precision of the measurement system by calculating the standard deviation of the measurement system from the moving range chart.

通过根据移动极差图计算测系统的标准偏差来确定测系统的精度。

And then you can also calculate your sample standard deviation.

然后你还可以计算你的样本标准偏差。

And then it has some type of standard deviation.

然后它有某种类型的标准偏差。

I'm just saying the standard deviation of that distribution.

我只是说该分布的标准偏差。

However, if the measurement standard deviation becomes too large, it will begin to have the largest impact.

然而， 如果测标准偏差变得太大，它将开始产生最大的影响。

Suppose you have done that and your process standard deviation is 2.5.The specifications for hardness are 30 to 38.

假设您已经这样做了， 并且您的过程标准偏差为 2.5。 硬度规格为 30 到 38。

Everything over N. And then, if you wanted the standard deviation of a sample, and it actually gets a little bit interesting.

一切都超过 N。然后，如果你想要样本的标准偏差， 它实际上会变得有点有趣。