These provide links to a wide variety of relevant external websites. Explore the Stat Links to check, and extend, your understanding of the course material.

• Practice guessing correlation coefficients and also try to guess the regression line and minimize your squared error (referred to as mean squared error, MSE)
  
  

• Add a point to a scatter diagram and see the effect this has on the regression line, the raw-score prediction model formula, and the correlation coefficient.
  
  

• Plot your own points and simultaneously view the corresponding regression line and correlation coefficient
  
  

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