查询词典 standard deviation

Idea is to replace y and each x variable with a standardized version – i.e. subtract mean and divide by standard deviation

使用Beta系数是因为有时我们把y和各个x替换为标准化版本——也就是，减去均值后除以标准离差。

The results show that the recovery is 99.43%~100.29%, the relative standard deviation is 0.265%, and the range of stibium is

结果表明：合成样回收率为99.43%~100.29%，相对标准偏差为0.265%，锑含量的测定范围为

After multivariable adjustment, consumption of tuna or other broiled/baked fish was associated with specific HRV components, including indices suggesting greater vagal predominance and moderated baroreceptor responses (eg, higher root mean square successive differences of normal-to-normal intervals [P=0.001]; higher normalized high-frequency power [P=0.008]; and lower low-frequency/high-frequency ratio [P=0.03]) and less erratic sinoatrial node firing (eg, lower Poincaré ratio [P=0.02] and higher short-term fractal scaling exponent [P=0.005]) but not measures of circadian fluctuations (eg, 24-hour standard deviation of normal-to-normal intervals).

经过多因素校正，鲔鱼或其他烤鱼的摄入与HRV某些特异性指标相关，包括了反映更强的迷走神经张力的指数和适当的压力感受器影响如更高的正常-正常均方根连续差[P=0.001；更大的正常化高频功率[P=0.008]；更小的低频/高频功率比［P=0.03］以及更少的窦房结电冲动游走（如，更低的Poincaré比［P=0.02］和更高的短期分形定标指数［P=0.005］），但不测量昼夜波动（如24小时正常-正常间期的标准差）。

15 And 20-22 weeks old SHR with implanted radiotelemetry devices were intratracheally administered with both normal saline and SRM 2975 (500 μg/animal, n=3) or (A-DEP 500 μg/animal, n=3) alternatively, so each rat could serve as its own control. ECG signals were recorded for 72 hours after each exposure, and heart rate and parameters of HRV including standard deviation of normal-to-normal intervals and root mean square of successive differences of adjacent normal-to-normal intervals were analyzed.

13-15周龄及20-22周龄之自发性高血压大鼠植入生理循环监测器后，於不同时间以气管灌注方式暴露生理食盐水、SRM 2975（500 μg/animal）或A-DEP（500 μg/animal），分析暴露后心跳及心跳变异性变化情形。

The time it takes to be served is triangularly distributed with minimum, most likely, and maximum times of 14, 19 and 24 minute, respectively. The time it takes to eat is normally distributed with a mean of 24 minutes and a standard deviation of 5 minutes.

聚会的时间是服从三角分配，其最小时间、最可能时间及最大时间分别为 14 、 19 、 24 分钟，若聚会的时间是使用随机分配平均值为 24 分钟，标准差 5 分钟。

Basal and middle segments of 6 walls of the left ventricle（12 Segments were studied. Peaking displacement and Time to peak displacement were measured with Triplane－TTI. Then we calculated the maximal difference in Td and the standard deviation of Td.

取左室6个壁的基底段和中间段，总共12个节段，应用Triplane－TTI测量各节段收缩最大位移及达位移峰的时间Td），计算最大差值(Td-maxD和标准差。

Dissolution method could measure tritium in the uranium bed completely, and its standard deviation was 6.49%.

溶解法能够彻底地测量铀床中残留的氚，其溶解法测量的标准差为6.49%。

In this paper,the author analyzes the shortcomings of the traditional method of the sta-tistical treatment of radar data for the accuracy evaluation by flying and derives an unbiased estimator s and its accuracy estimating formula of standard deviation σunder the limited distribution startig from Bessel s formula.

分析了传统雷达精度校飞数据统计处理方法的缺陷，并从Bessel公式出发，导出了σ在极限分布下的无偏估计量S′及其精度估计公式，进而提出了雷达校飞数据统计处理的改进方法，最后给出了一个计算实例。

Unimodal distribution; Error distribution; Standard deviation; Determination; Ponder Full Text - Paper in Chinese

当人们了解了某种测量数据的分布后，再考虑均值和所谓的标准值之差就可以了。

Under the optimum experimental conditions, copper, iron and zinc in traditional Chinese medicines such as radix angelicae sinensis, flos sophorae, herba taxilli, folium apocyni veneti and radix scutellarae were determined. The recoveries are between 90% and 110%, the relative standard deviation is less than 5%, and the experimental results are satisfactory. This method is rapid and reliable.

在选定的实验条件下，利用标准加入法分析测定了中药当归、槐花、桑寄生、罗布麻叶和黄芩等中药中的铜、铁和锌的含量，回收率为90%~110%，方法的相对标准偏差小于5%。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。