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BDA (L2-Regression (Assumptions underlying regression (linearity…

- - - - Multi-collinearity (The one that can be explained by others can exclude).
      - A group of logically related variables (Include all or exclude all)
      - P-value (above the significance level) or T-stat (Exclulding the one that is less than 1 could increase the adjusted R-square)
    - - Stepwise Regression
      - Interaction Variables
  - - - Nonlinear Transformation
        
        Interpretation of Log Equation（Percentage）
- - - - For Trend--Holt's Model
      - For Seasonal--Ratio-to-Moving-Averages Method
        /Winter's exponential smoothing model
    - - For Trend--linear regression
      - For Seasonal--dummy variables