Multiple Choice
If you see the notation ,what should you do?
A) First multiply each X by its partner Y,then sum the results.
B) First sum the Xs,then sum the Ys,then multiply the results.
C) First sum the Xs,then multiply the result by each Y.
D) First sum the Ys,then multiply the result by each X.
Correct Answer:

Verified
Correct Answer:
Verified
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