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Pearson r

  • Compute a Pearson r based on your data to determine the actual correlational coefficient.
  • If done correctly:
    • r = 0.897
    • r² = 0.805
  • Which means your new test has concurrent validity because it is positively correlated with a test that measures the same construct.
  • Your correlation has also accounted for over 80% of the variance between the two scores.