coefficient of variation

The results showed that parameters Index of Diversity(ⅰ), Variance of Phenotypic Frequency ( VPF), Variance of Phenotypic Value ( VPV) and Coefficient of Variation ( CV) are more effective on evaluating different methods for core collection selection among 8 studied parameters.

结果表明，在所选8个参数中，多样性指数、表型方差、表型频率方差及变异系数为对比不同核心种质取样方法间优劣的有效参数；

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Robust Optimal Design of Gear Driver Based on Coefficient of Variation

基于离差系数转化法的齿轮传动稳健优化设计

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When the white noise level ( coefficient of variation ) increases to 20 % , the cyclical fish population spasmodic.

在白色噪音水平 ( 变动系数 ) 增加至20%时, 周期型种群变为不稳定型.

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Multivariate Process Capability Index Based on Coefficient of Variation

基于差异系数的多元过程能力指数

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In this paper, the bayes predict formula of the resistance characteristic value is put forward in the condition of the coefficient of variation is known or unknown, and an authentication is provided.

文章提出了变异系数未知和已知情况下抗力标准值的贝叶斯推断公式，并予以验证。

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The mean, median, standard deviation, range, quartile, coefficient of variation of the deviation between the IQR and IQW ( IQR-W) were 5.36,6,14.55,74,271.46% respectively.

成人研究对象IQR与IQW差值（IQR-W）之均数为5.36，中位数为6；而标准差为14.55，极差为74（-35至39），四分位数间距为18，变异系数为271.455%。

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Impartiality Indexes of Power Dispatching Based on Modified Weighed Coefficient of Variation

基于修正加权变异系数的电力调度公平性指标

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Through comparing the variation degree and morbidity caries consistent rate of identical twin and different twin on the caries quantity, lose quantity and complementary quantity, the heritability of permanent tooth caries was counted with classical correlation coefficient method and accordant rate formula.

通过比较同卵和异卵双生子对内龋、失、补牙数的变异程度和患龋一致率，采用经典相关系数法和一致率公式计算出恒牙龋齿的遗传度。

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The average, the standard deviation and the coefficient of variation of the sample attributes of the NWD are the reflections of the basic quantitative characteristics of the nested habitats.

由近湿地类型区样点属性计算平均值、标准差和变异系数，获得了朱鹮营巢生境的数量特征；

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Two methods were adopted to calculate the threshold temperature and effective temperature sum, and coefficient of variation was used in tests.

对试验结果采用了2种方法计算发育起点温度和有效积温，并用变异系数进行检验。

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Dicrotic notch amplitude is increased compared with dominant wave, but dicrotic wave is decreased, and coefficient of variation continued rose.

对于幅值的特征值，随着嵌入式传感器位置偏置程度的增加，相对主波幅度而言，降中峡的幅值有增高趋势，而重搏波幅度则呈下降趋势，且变异系数不断增加。

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The results indicated: Shear stress, tensile stress and springiness may be employed to assess the texture quality of noodles which have big width coefficient of variation and relatively small thickness coefficient of variation.

结果表明，在面条宽度变异系数较大、厚度变异系数相对较小的情况下，剪切应力、拉断应力和弹性，可用于面条质构品质的评价；

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Pared t-test and calculating coefficient of variation were used to evaluate the repeatability of 3D ultrasound measurement.

应用配对t检验及计算变异系数评价三维超声测量的可重复性。

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A comprehensive method using coefficient of variation is suggested for controlling the quality of products, both finished and semifinished, in the cotton spinning industries.

本文拟采用变异系数CV（%）值统一考核与控制棉纺半成品、成品质量，作为尝试。

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The variation coefficient of uniformity of a drilling is 6%, which is 2.27% less than the rice bud seed without mixed with dry soil;

拌干土粉芽种的播种量变异系数为6%，比芽种裸籽的播种量变异系数小2.27%；

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The result shows that standard deviation is 0.02, coefficient of variation linear correlation is 0.9996.

方法标准偏差为0.02, 变异系数为 0.24% .本方法可适用于霜脲氰及其复配制剂的分析.

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Discrete level of data of every tested item was introduced through experimental coefficient of variation.

运用经验变异系数来表述各检验项目数据的离散程度.

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While calculating common K, the writers found that the coefficient of variation v/ m, as an index to reject abnormal data, was not suitable.

在计算公共K值时，笔者发现按常规的以变异系数v/m作为剔除异常资料的指标效果不理想。

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Difference in reflecting human development level between DALE and LE by analysis of coefficient of variation.

采用变异度分析探讨健康期望寿命与期望寿命在区分人文发展水平方面的差异。

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Research on Standard Deviation and Coefficient of Variation for Concrete Strength

混凝土强度的标准差和变异系数

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The coefficient of variation in SOC among soil types was also great, with the highest in mountain acid brown type ( 95.42%), and with the smallest in mound lime concretion black soil type ( 18.92%).

土类的有机碳变异性也极大，变异系数以山地酸性棕壤类最大，达95.42%，最小的是岗地砂姜黑土类，为18.92%。

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Results Coefficient of variation ( CV ) for within-run assays was 5.0 % , CV for between-run assays was 1.6 %.

结果ACB方法 批内变异系数 ( CV ) 为5.0%, 批间CV为1.6%.

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The minimum detectable value of sorbic acid is 1 × 10-9 g, coefficient of variation ( CV) is 0.18%, recovery rate is 99.81%.

回收率为99.81%；CV（变异系数）为0.18%。

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Analyzing about the statistical characteristic data of soil nitrate content, the result was that the range of coefficient of variation of soil nitrate content is between 46.71% and 99.78%, in which belong to the medium-degree vitiated intensity.

对土壤硝态氮的统计特征数据分析知，土壤硝态氮的变异系数在46.71-99.78%之间，属中等变异。

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New inspection method was deduced by using constant coefficient of variation in sequence inspection method, and the approximate relationship of inspection variables between mean method and sequence one was gained by analyzing difference of two methods.

将变差系数不变的条件引入到序贯检验方法中，推导出新的结构强度检验方法，分析检验变量与均值法的差异，得到两者的近似关系。

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Results The mean variation coefficient of CACD, ACA and ACV measurements were 0.4 %, 3.9 % and 2.6 % respectively.

结果　前房轴深 、 前房夹角、前房容积的平均变异系数分别为04% 、 39%、26%.

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The results indicate that the accuracy of the result was affected by different dosage. The coefficient of variation of dosage above threshold is lower than that of threshold dosage. It is better to conduct this experiment with dosage of 55mg/ kg.

结果表明，给予戊巴比妥钠的剂量对实验结果有一定的影响，阈上剂量对戊巴比妥钠所致小鼠睡眠时间的变异系数明显小于阈剂量，实验时宜选用阈上剂量55mg/kg作为受试剂量。

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The average recovery of cyanocobalamin reaches 100. 9% and the coefficient of variation is 1. 6%.

实验中维生素B（12）的平均回收率达100.9%，RSD为1.6%。

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Approximate analysis on the coefficient of variation

变异系数的近似分析

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The average recoveries and coefficient of variation of fipronil in Chinese cabbage were 91.92 % ～101.64 % and 4.5 % ～6.8 %.

西兰花中平均回收率达到91.92%~101.64%,RSD为4.5%~6.8%.

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