Which of the following is (are) true?
A) r2 = explained variation / total variation
B) r2 = SSx / SSy
C) r2 = (total variation - error variation) / total variation
D) r2 = (SSy - SSerror) / SSy
E) All of the above are true.
Answer: E
A) r2 = explained variation / total variation
B) r2 = SSx / SSy
C) r2 = (total variation - error variation) / total variation
D) r2 = (SSy - SSerror) / SSy
E) All of the above are true.
Answer: E