A psychologist gives a group of participants 20 personality tests. He looks at the correlations between each test and each of the other 19 (a total of 180 correlation coefficients). He finds two correlations that are statistically significant—that is, that his statistical tests tell him would not occur more than five times out of 100 . What should the psychologist conclude from his study?
A. The two statistically significant correlations probably represent "real" relationships.
B. The tests he used probably were not valid.
C. The two statistically significant correlations might very well be chance findings.
D. The tests he used may not be reliable.
C
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