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Simple regression model - Coggle Diagram
Simple regression model
Deriving the OLS
導出b0及b1的估計式
(Xi)(ui)相加為0
error相加為0
自變數與residual必須為不相關(證xi及ui的covariance)
Incorporating Non-linearness非線性
Semi-logarithmic form
Log-logarithm form
Standard Assumption fit linear regression model
SLR3:Sample variation in X
SLR4:Zero conditional mean
SLR2:Random Sampling
SLR5:Homoskedasticity同質變異數
SLR1:Linear in parameter
Estimating the error variance
Regression on a binary explanatory variable
Counterfactual outcomes causality
and policy analysis
Unbiasedness of OLS
Variance of bo and b1 given X