Linear Regression

regression and classificationSimple linear regressionLeast-squared fittingPoint estimation of β0 and β1 Multiple linear regressionLeast-squared fitting Analysis of Variance (ANOVA)R2 for regressionTest for linear modelTest for coefficients

regression and classification

x \ ycontinuousdiscretecontinuousregressionclassificationdiscreteregression？？？？

Simple linear regression

Least-squared fitting

Minimize the least square error 这里的 residual，就是对于单个点和计算得到的线性回归函数的误差，也就是相同x值下的两个y的差值。

Point estimation of β0 and β1

置信区间，估计不考，省略

Multiple linear regression

Least-squared fitting

some other calculation and parameters are in the ppt 4&5 p14

Analysis of Variance (ANOVA)

R2 for regression

Test for linear model

Test for coefficients