...准误差 这是指一个估计值的标准偏差,可以知 道此估计值的精确度,而样本平均值的标准偏差(standard deviation of sample mean)又可称为标准均差 Standardized Normal Deviate, Z 标准化常态偏离 平均值为0 且标准偏 差为1 的常态分布变数 statistic 统计值 ...
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加权平均值的标准偏差 standard deviation of weighted mean
平均值的标准偏差 standard deviation of mean
平均值的实验标准偏差 experimental standard deviation of the mean
六西格玛黑带应该能够计算出一个分组发生频次分布数据的均值和标准偏差。
The Six Sigma Black Belt should be able to compute the mean and standard deviation from a grouped frequency distribution.
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。
This is important, because it shows that looking at just the average is not enough, especially if your standard deviation is a large number.
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.
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