It has some assumed mean value and some standard deviation.

它有一些假定的平均值和一些标准差。

And from that we're going to subtract the assumed that mean.

我们将从中减去假设的均值。

] BOEN: Which was made up, and which I assumed meant keeping our supervisors accountable to us.

] BOEN：这是编造的，我认为这意味着让我们的主管对我们负责。

If we want to figure out how many standard deviations that is away from our assumed mean, that there's no difference, then we just divide 0.051 by this standard deviation right over here.

如果我们想计算出与假设均值相差多少标准差，没有区别，那么我们只需将 0.051 除以此处的标准差即可。