Question 139426: 1. What is the difference between strong negative and strong positive r? What does the correlation tell you?
2. During the years 1790 to 1820, the correlation between the number of churches built in New England and barrels of Rum imported into the region was a perfect 1.0. What does this tell you – that church building causes rum drinking, that rum drinking causes church building, or something else? If something else, what?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1. What is the difference between strong negative and strong positive r? What does the correlation tell you?
strong negative: as x increases, y decreases
strong positive: as x increases, y increases
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2. During the years 1790 to 1820, the correlation between the number of churches built in New England and barrels of Rum imported into the region was a perfect 1.0. What does this tell you – that church building causes rum drinking, that rum drinking causes church building, or something else? If something else, what?
It only tells you as one increases the other increases. It does not
say anything about one causing or being caused by the other.
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Cheers,
Stan H.
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