【概率统计】23考研一元线性回归笔记
1. Random Variables
$$Y_i=\beta_0+\beta_1X_i+\varepsilon_i$$
$$df=n-2$$
1-1. $\varepsilon_i$
Distribution
$$\varepsilon_i\sim N(0,\sigma^2)\ \text{i.i.d}$$
$$Y_i=\beta_0+\beta_1X_i+\varepsilon_i$$
$$df=n-2$$
$$\varepsilon_i\sim N(0,\sigma^2)\ \text{i.i.d}$$