When predictor and criterion scores have been obtained, the predictor can be considered valid if ________.
A) the correlation coefficient has the desired practical and statistical significance
B) the correlation coefficient has statistical significance alone
C) the correlation coefficient is insignificant
D) the correlation coefficient has practical significance alone

Question

Quizplus · Accepted Answer

A predictor is considered valid when the correlation coefficient has both practical and statistical significance. Practical significance refers to whether the relationship between the predictor and criterion scores is strong enough to be useful in real-world applications, while statistical significance refers to the likelihood that the correlation coefficient is not due to chance. Therefore, A is the best choice as it considers both practical and statistical significance.

When Predictor and Criterion Scores Have Been Obtained, the Predictor