Question: a. If large values of X cause the Y values to be large, would you expect the correlation to be positive, negative, or zero? Why?

a. If large values of X cause the Y values to be large, would you expect the correlation to be positive, negative, or zero? Why?
b. If you find a strong positive correlation, does this prove that large values of X cause the Y values to be large? If not, what other possibilities are there?

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