Child Psych

Category - Research & Stats

One of the values used in bivariate correlation tests is the coefficient of determination. If there is a correlation coefficient of .50 between education and income, what is the coefficient of determination?
  1. 0.5
  2. 0.25
  3. 0.07
  4. 75%
Explanation
Answer: B - The coefficient of determination is the square of the correlation coefficient. Squares of decimals are always smaller than the original value; 5 squared is 25, and the decimal point remains in the same place. This number suggests that 25% (the equivalent percentage) of variability in income is explained by education.
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