The selections of 150 for dimensional parameters and 4000 for the total deviation are designed to acquire the typical shaking motions of an average user.

空间参数选择150及总偏差选择4000都旨在检测一般用户的典型震动动作。

youdao

Using the average and the standard deviation, you can interpret that 68% of the attempts were between .2 and 1.3 seconds.

使用平均值和标准偏差，您可以说明，68% 的尝试是在 0.2 秒到 1.3 秒之间。

youdao

The average size is 3,131 square feet, with a standard deviation of 655 square feet. (Standard deviation is a statistical measure of variance.)

平均大小为 3,131 平方英尺，标准偏差为 655 平方英尺（标准偏差是一个描述差异的统计量度）。

youdao

And when we're talking about the amplitude of the wave, we're talking about the deviation from that average level. So, if we define the average level as zero, you can have either a positive amplitude or a negative amplitude.

当我们讨论一个波的振幅时,我们说的是偏离平均位置的量,如果我们把平均位置,定义为零的话，那幅值不是,正的就是负的，有时候人们在。

麻省理工公开课 - 化学原理课程节选

It is also more than one standard deviation below the historical average of 30%, making this an unusually low reading.

FORBES: AAII Survey: Big Jump In Bullish Sentiment

Nonetheless, optimism remains more than one standard deviation above its historic average of 39%-a sign that it remains at high levels.

FORBES: Bulls Slip But Don't Fall

Pessimism not only stayed at its lowest level since December 23, 2010, it also remained at a reading that is more than one standard deviation below the historical average of 30%.

FORBES: AAII Survey: Individual Investors Stay Optimistic