术语“拟合优度统计学”的详细信息

英译术语:

goodness-of-fit statistics

汉语语境:

拟合优度（Goodness of Fit）是指回归直线对观测值的拟合程度。度量拟合优度的统计量是可决系数（亦称确定系数）R^2.R^2的取值范围是0，1.R^2的值越接近1，说明回归直线对观测值的拟合程度越好。反之，R^2的值越接近0，说明回归直线对观测值的拟合程度越差。

英语语境:

Of Fit Goodness is the fitting degree of the regression line to the observation value. The measure of goodness of fit is the coefficient of determination (aka coefficient) R^2. The range of R^2 is 1], [0. The value of R^2 is close to 1, and the fitting degree of the regression line to the observation value is better. Conversely, the value of R^2 is close to 0, and the fitting degree of the regression line is worse.