题目
35.[多选题]hat(Y)表示OLS估计回归值，u表示随机误差项。如果Y与X为线性相关关系，则下列哪些是正确的( )A. Y_(i)=beta_(0)+beta_(1)X_(i)B. Y_(i)=beta_(0)+beta_(1)X_(i)+u_(i)C. hat(Y)_(i)=hat(beta)_(0)+hat(beta)_(1)X_(i)+u_(i)D. hat(Y)_(i)=hat(beta)_(0)+hat(beta)_(1)X_(i)+e_(i)E. hat(Y)_(i)=hat(beta)_(0)+hat(beta)_(1)X_(i)
35.[多选题]$\hat{Y}$表示OLS估计回归值，u表示随机误差项。如果Y与X为线性相关关系，则下列哪些是正确的( )
A. $Y_{i}=\beta_{0}+\beta_{1}X_{i}$
B. $Y_{i}=\beta_{0}+\beta_{1}X_{i}+u_{i}$
C. $\hat{Y}_{i}=\hat{\beta}_{0}+\hat{\beta}_{1}X_{i}+u_{i}$
D. $\hat{Y}_{i}=\hat{\beta}_{0}+\hat{\beta}_{1}X_{i}+e_{i}$
E. $\hat{Y}_{i}=\hat{\beta}_{0}+\hat{\beta}_{1}X_{i}$
题目解答
答案
BE
B. $Y_{i}=\beta_{0}+\beta_{1}X_{i}+u_{i}$
E. $\hat{Y}_{i}=\hat{\beta}_{0}+\hat{\beta}_{1}X_{i}$
B. $Y_{i}=\beta_{0}+\beta_{1}X_{i}+u_{i}$
E. $\hat{Y}_{i}=\hat{\beta}_{0}+\hat{\beta}_{1}X_{i}$