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HOW TO CALCULATE THE CORRELATION COEFFICIENT BETWEEN TWO VARIABLES WITH TI83 CALCULATOR

Steps Key Sequence Screens
1. Enter independent data into list, L1    
2. Enter dependent data into list, L2    
3. Select DiagnosticOn press 2nd then 0 (for catalog)
  scroll down to DiagnosticOn
  ENTER
4. Perform DiagnosticOn ENTER
5. Set up the calculation for the regression line (or you can plot the regression line) Press STAT
  once
  4 [for LinReg(ax+b)]
  press 2nd then 1 (for L1)
  comma
  press 2nd then 2 (for L2)
5. Calculate the regression line ENTER
* r is the correlation coefficient.