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A set of n = 5 pairs of X and Y scores has EX = 15, E Y = 5, and EXY = 10. For these data, what is the value of the numerator
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Answer #1

Numerator

=\sum XY-(\sum X*\sum Y/n)

= 10 - ( [15*5] /5 )

= 10 - 15

= -5

Option 3) is the correct answer.

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