My Math Forum Testing My Hypothesis About a Relationship

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 October 17th, 2018, 05:04 AM #1 Senior Member   Joined: Oct 2013 From: New York, USA Posts: 639 Thanks: 85 Testing My Hypothesis About a Relationship When I say "testing my hypothesis," I am not talking about statistical hypothesis testing. I expect x and y to have a strong positive correlation. I expect the same change in x to affect y more for the middle values of x than for each end, like the shape of y = -x^2. What would show if the same change in x affects y differently based on the value of x?
 October 18th, 2018, 08:00 AM #2 Senior Member     Joined: Sep 2015 From: USA Posts: 2,430 Thanks: 1315 $\dfrac{dy}{dx}$?

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