Question: B22. If two variables have a correlation coefficient (r) of 0.7, which of the following is correct? The percentage variation in Y that is explained

B22. If two variables have a correlation coefficient (r) of 0.7, which of the following is correct? The percentage variation in Y that

  1. is explained by the regression equation with X is 30%.
  2. is explained by the regression equation with X is 70%.
  3. is not explained by the regression equation with X is 49%.
  4. is not explained by the regression equation with X is 51%.

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