标准差(SD) 标准误(SE) 变异系数(CV) 偏度、峰度(Skewness、Kurtosis) 比(Ratio) 构成比(Proportion) 率(Rate) 相对危险度(RR,Relative risk) 比数比(OR,Odds ratio) Top/Bottom X Box 数据类型 ①名义尺度(Nominal):性别、城市 ②有序尺度(Ordinal):学历、喜好度-不能加减乘除 ③定距尺度(Interval):温...
template <class_InIt,class_Ty> inline_Tycv(const_InIt _First,const_InIt _Last, _Ty _Val){ _Adl_verify_range(_First, _Last); autom = mean(_First, _Last, _Val); autos = sd(_First, _Last, _Val); return_Val = s / m *100; } }// namespace math #endif// __MATH_H__ #e...
• Mean(or median),+/-error:均值(或中位数),+/-误差。 • Mean(or median),Upper /Lower limits:均值(或中位数),上/下限。 其中,SD(Standard Deviation)表示标准差;SEM(Standard Error of Mean)表示样本 平均数的标准误;CV表示变异系数,相当于SD/Mean,如果设置了此值,则GraphPad Prism 会自动生成S...
Mean, SD, and CV of platelet counts with PLT-F, PLT-O, and PLT-I.Atsushi, WadaYuri, TakagiMari, KonoTakashi, Morikawa
指不同批次之间或不同实验室之间的结果变化,通常通过SD或者CV来评估。 ▲图3. 4台独立的Azure Cielo™实时荧光定量PCR系统同时检测GAPDH,Cq Mean=20.11,SD= 0.002 4. 灵敏度(Sensitivity) 通常灵敏度表示为检测限(limit of detection, LOD),可通过梯度稀释样品来确定最低检测限。分析灵敏度是指一个样本可通过...
The root mean square error (RMSE) is also known as the root mean square deviation (RMSD); its analytical expression is very similar to SD in the sense that RMSE refers to N data points instead of N−1: [63a]RMSE(units)=[1N∑i=1N(Hmi−Hei)2] where the RMSE is in the same un...
SD均值和SEM均值sd/mean×100% 目录标准差(SD)均方根误差(RMSE/RMSD)均方误差(MSE/MSD)平均绝对误差(MAE)决定系数/拟合优度(R^2)平均偏差(Bias) 标准差(SD)标准差(StandardDeviation),在概率统计中最常使用作为统计分布程度(statisticaldispersion)上的测量。标准差定义是总体各单位标准值与其平均数离差平方的算术...
cv::meanStdDev cv::cvtColor(matROI_Brightness2, matROI_Brightness2, COLOR_BGR2GRAY); scalar = cv::mean(matROI_Brightness2); Mat tmp_m, tmp_sd; cv::meanStdDev(matROI_Brightness2, tmp_m, tmp_sd); double tmpCountMinVal = 0, tmpCountMaxVal = 0;...
Another way to describe the variation of a test is calculate the coefficient of variation, or CV. The CV expresses the variation as a percentage of the mean, and is calculated as follows: CV% = (SD/Xbar)100 In the laboratory, the CV is preferred when the SD increases in proportion to...