What the standard deviation really tells you is that some set of users were + or - the test average (or arithmetic mean).
标准偏差真正能够告诉您的是，某些用户是高于还是低于平均测试水平(或者算术含义)。
2
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。
3
Comparing the ratio of standard deviation to the average for these two distributions shows that they are similar.