2) you pick 2 cards from a deck. What is the probability that both are diamonds ?.
1 answer:
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First, you have to establish the fact that there is a correlation because the points are obviously grouped together
The, you have to know that which direction a positive and negative gradient face ( a positive gradient looks like a tick when you join a line to it)
Look at the attachment and the answer is a negative correlation ;)
The, you have to know that which direction a positive and negative gradient face ( a positive gradient looks like a tick when you join a line to it)
Look at the attachment and the answer is a negative correlation ;)