Code for Simple Linear Regression and Correlation

• ex12_01.R (the simple linear regression model)
  
• ex12_02.R (estimating model parameters)
  
• ex12_03.R (inferences about the slope parameter beta_1)
  
• ex12_04.R (inferences concerning mu and the prediction of future Y values)
  
• ex12_05.R (correlation)
  
• ex12_supplementary_exercises.R (supplementary exercises)