foofy computes the correlation between an individual's physical strength and his or her college grade poing average. Using a computer, the correlation for a sample of 2000 people is r(1998)=+.08, p=<.0001. she claims this is a useful tool for predicting which college applicants are likely to succeed academically. Do you agree or disagree? Why?
Statistics - PsyDAG, Sunday, July 10, 2011 at 1:52pm
r = .08 accounts for too little of the variability (< 1%) to be useful in predicting college success.