Chapter 4 Formulas and Vocabulary

• Correlation coefficient, (p. 192).
  Definition formula:
  
  
  Computational formula:
  

• Positive and negative correlation (p. 196).
• Scatterplot (p. 188)

• Extrapolation (p. 215)
• Prediction error, or residual (p. 214).
  

• Regression equation (regression line) (p. 210).
  

• Slope of the regression line (p. 210).
  Definition formula:
  
  
  Computational formula:
  

• Intercept of the regression line (p. 210).
  

• Coefficient of determination, (p. 230).
  

• Least-squares criterion (p. 226)
• SSE, sum of squares error (p. 226).
  

• Standard error of the estimate, (p. 228).
  

• SSR, sum of squares regression (p. 230).
  Definition formula:
  
  
  Computational formula:
  

• SST, total sum of squares (p. 229).
  Definition formula:
  
  
  Computational formula: