Using median splits so that one can do a t test on correlational data is:
A) a common practice
B) less powerful than testing the significance of the correlation coefficient
C) better than testing the significance of the correlation coefficient because it allows the investigator to determine if a variable caused a certain effect
D) both a and b

Question

Quizplus · Accepted Answer

Testing the significance of the correlation coefficient is more powerful than using median splits to do a t test on correlational data.

Using Median Splits So That One Can Do a T