Count(计数) StDev(统计标准偏差) A00级轿车的轴距应在2米至2.2米之间,发动机排量小于1升,例如奥拓就属于A00级轿车;A0级轿车的轴距为2.2米至2.3米,排量为1升至...
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使用这些统计数据判断是否可以清楚地区分两个任务的速度(平均值之差超过三倍标准偏差),还是相互重叠。
Use these statistics to decide that two tasks are either clearly distinguished in speed (means greater than three standard deviations apart), or else that they overlap.
描述度量值跨度(或者说漂移)的最常用统计技术是标准偏差(standard deviation)。
The most common statistic for describing measurement spread (or scatter) is the standard deviation.
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)。
The average size is 3,131 square feet, with a standard deviation of 655 square feet. (Standard deviation is a statistical measure of variance.)
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