拟合的总效果多元全相关系数(Multiple correlation coefficient) R²(即R=Sq)和修正的多元相关系数(Adjusted multiple correlation coefficient)R²adj(即R-Sq(adj)) 由回归方程中的平方和分解公式可知: SSTotal = SSModel + SSError 考虑到SSModel在SSTotal中的比例,定义R平方(R-Square,简记R-Sq): R² =...
E R T T b L SS SS R =1-SS SS L xx yy == R-Sq 是衡量回归方程解释观测数据变异的能力，是回归平方和占总离差平方和的比率。其数值越接近于1代表模型拟合越好。在简单线性回归中，当只有一个自变量时，R-Sq 就等于2r （即先关系数的平方和），其取值范围：0≤R-S q ≤100%，当R-S q=0时...
简单线性回归方程总效果度量指标:R-Sq、R-Sq(adj)、S如下例:回归方程Y=0.736667-0.131667X;R-Sq=71.4%R-Sq(71.4%)是简单线性回归方程总效果的其中一个指标,在mititab中R-Sq代表,其计算公式如下:R-Sq是衡量回归方程解释观测数据变异的能力,是回归平方和占总离差平方和的比率。其数值越接近于1代表模型拟合越好...
adjusted to trade off power, linearity, and efficiency characteristics of the device. The recommended quiescent drain current (IDQ) shown in the RF typical performance table is chosen to best represent the operational characteristics for this device, con- sidering manufacturing variations and expecte...
Metal film cores adjusted by laser spiral are used where the resistor value is above that suited to wire. Similar performance is obtained although short time overload is slightly derated. Characteristics - Electrical Test Condition -55°C ~ 155°C 10 times rated power for 5 seconds ...
The operating shaft is movably held on the panel by a press lever. USE/ADVANTAGE - The flip chart stand can be adjusted in height by moving the paper-support panel along parallel side grooves, and then locked in position or released. 展开 ...
A top portion of each of the support legs are connected to an upper retaining mechanism that is selectively frictionally engaged with the spine member such that the height of the upper retaining mechanism may be selectively adjusted. Front support braces having first and second brace ends have a...
For the mechanical properties, the mechanical behavior could be adjusted to realize the brittle-to-ductile transition, which was significantly influenced by the crystallization degree. The investigation of the secondary relaxations caused by the transition of conformation of CHDM and THFDM rings proved ...
Each protein fraction was diluted by the corresponding lysis buffer and adjusted its concentration at 0.75 μg/μl. One-hundred microliters of diluted samples were mixed with 50 μl of 3xSDS buffer [187 mM Tris-HCl (pH 6.8), 6% SDS, 30% glycerol, 0.015% bromophenol blue (BPB), 15% ...
简单线性回归方程总效果度量指标:R-Sq、R-Sq(adj)、S如下例:回归方程Y=0.736667-0.131667X;R-Sq=71.4%R-Sq(71.4%)是简单线性回归方程总效果的其中一个指标,在mititab中R-Sq代表,其计算公式如下:R-Sq是衡量回归方程解释观测数据变异的能力,是回归平方和占总离差平方和的比率。其数值越接近于1代表模型拟合越好...