1. Sum Of Squares Due To Error 对于第i个观察点, 真实数据的Yi与估算出来的Yi-head的之间的差称为第i个residual, SSE 就是所有观察点的residual的和2. Total Sum Of Squares 3. Sum Of Squares Due To Regression 通过以上我们能得到以下关于他们三者的关系 决定系数: 判断 回归方程 的拟合程度 (coefficient of determination)决定系数也就是说: 通过回归方程
problem 1002 A+B for Polynomials (25)(25 point(s)) This time, you are supposed to find A+B where A and B are two polynomials. Input Each input file contains one test case. Each case occupies 2 lines, and each line contains the information of a polyno
题目描述: This time, you are supposed to find A+B where A and B are two polynomials. Input Each input file contains one test lines, and each line contains the information of a polynomial: K N1 aN1 N2 aN2 ... NK aNK, , , ..., K) are the exponents and coef
y,X1,X2,X3 分别表示第 t 年各项税收收入(亿元),某国生产总值GDP(亿元),财政支出(亿元)和商品零售价格指数(%). (1) 建立线性模型: ① 自己编写函数: > library(openxlsx) > data = read.xlsx("22_data.xlsx",sheet = 1) > x = data[,-c(1,2)] > x = cbind(rep(1,17),x) > x_mat = as.matrix(x) > y