average and standard deviation 平均值和标准差
average relative standard deviation 平均相对标准偏差
This is important, because it shows that looking at just the average is not enough, especially if your standard deviation is a large number.
这是很重要的,因为它说明了,仅查看平均值是不够的,特别是当您的标准偏差非常大的时候。
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)。
In Figure 11, the overall average response time dropped by slightly more then half, with the standard deviation well under 1 second.
在图11中,整体的平均响应时间下降了一半以上,并且标准偏差低于1秒。
7% 77% is class average and the standard deviation was 17% so you can see where things lie. 50% is a pass.
7是平均水平,标准偏差是%,这就是事情所在,50%就及格。
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