How many degrees of freedom do we have in significance testing of r?
A) N -2,where N equals the total number of Xs plus the total number of Ys
B) N - 2,where N equals the total number of pairs of scores
C) N - 1,where N equals the total number of pairs of scores
D) N -1,where N equals the total number of Xs plus the total number of Ys
Correct Answer:
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