Range,average deviation and standard deviation are the three indices of variability that statisticians use to characterize the dispersion among the measures in a given population.
极差(R)、平均差(AD)和标准差(δ)是描述离散程度所采用的三个测度值,通过证明,三者之间存在着R≥δ≥AD≥0的关系式。
This paper studies a kind of uncertain multiattribute decision-making problems,in which the information about the attribute weights are unknown completely and the attribute values are in the forms of interval numbers,and presents a method based on deviation degree of interval numbers for determining the weights of multi-attribute decision making problems by maximizing standard and mean deviations.
研究了属性权重信息完全未知且属性值以区间数形式给出的不确定型多属性决策问题,提出了一种基于区间数相离度的不确定型多属性决策权系数确定方法——标准差和平均差极大化方法,并给出了一种基于可能度的决策方案排序方法。
Standard deviation and the inherent relation of mean differences and application study;
标准差和平均差的内在关系及应用研究
However, if we construct a comprehensive measuring index using the method of standard deviation and mean difference maximization and assimilate the advantages of the above indexes, we can.
而运用标准差和平均差极大化方法构造一种综合评价测度指标,并吸取述上述五个指标的长处,可对基金绩效作出唯一和合理的评价。
An important inequality between standard deviation and mean deviation δ=E|X-EX| is given :σ≥δ,the equality holds if and only if X is one-point distributed or equal probabieity two-point distributed.
本文证明了随机变量标准差和平均差δ＝Ｅ｜Ｘ－ＥＸ｜间的一个重要不等式：σ≥δ，等号当且仅当Ｘ服从单点分布或等概率两点分布时成立。
The Study of Measurement Relationship between Range,Average Deviation and Standard Deviation;
极差、平均差和标准差之间测度关系研究
single plane mean outside diameter deviation
单一平面平均外径偏差
single plane mean bore deviation
单一平面平均内径偏差
deviation of sampling average from general average
抽样平均数和总平均数的离差
age absolute relative error
平均相对误差绝对值
average absolute relative deviatio
平均相对离差绝对值
floating average position action
无静差的平均位置作用
an extreme deviation from the mean.
与平均数偏差最大的值。
experimental standard deviation of the mean
平均值的实验标准偏差
The variance is simply the average squared difference of all numbers from their mean or average value.
方差就是各个数的中值（或平均值）与各个数的差值的平方的平均值。
the arithmetic mean of the absolute values of deviations from the mean of a distribution.
分布平均数与偏差绝对值的算术平均值。
The results reveal that the combined forecasting model is more effective.
结果表明，此组合预测平均误差和预测平方根误差均较小。
the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value.
接近平均数的二阶矩；平均值随机变量的偏差的平方的期待值。
Average Post Adjustment index
平均服务地点差价调整数指数
arithmetical mean deviation of the (roughness) profile
(粗糙度)轮廓的算术平均偏差
Diameter Tolerance, Ovality and Average Decarburized Layer Depth
直径公差，偏圆度及脱碳层的平均深度
Tibet's taxation and corvee labor will be born by the whole society on an equal footing.
西藏差役由全社会平均负担。
standard deviation of the arithmetic mean of a series of measurements
测量列算术平均值的标准（偏）差