Consider a large number of countries around the world. There is a positive corre

Question

Consider a large number of countries around the world. There is a positive correlation between the number of Nintendo games per person x and the average life expectancy y. Does this mean that we could increase the life expectancy in Rwanda by shipping Nintendo games to that country?
Answer
Yes: the correlation says that as Nintendos go up, so does life expectancy
No: if the correlation were negative we could accept that conclusion, but the correlation is positive
Yes: positive correlation means that if we increase x, then y will also increase
No: the positive correlation just shows that richer countries have both more Nintendos and higher life expectancies
It makes no sense to calculate correlation between these variables

Explanation / Answer

No, the positive correlation just shows that richer countries have both more nintendos and higher life expectancies it makes no sense to calculate correlation between these two variables.

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