Hi,
My regression are invited the squared term and the relationship proved to be a inverted u shape, but I want to draw the graph like the graph posted like this one (the graph is from Sahay 2015), but I don't know how to make it.Can someone help me with the code?
Thanks in advance.
My regression are invited the squared term and the relationship proved to be a inverted u shape, but I want to draw the graph like the graph posted like this one (the graph is from Sahay 2015), but I don't know how to make it.Can someone help me with the code?
Thanks in advance.
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