Thread: What makes a polynomial trend line curve up or down?
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jimshoe40 jimshoe40 is offline
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Default What makes a polynomial trend line curve up or down?
I added a polynomial trend line with an order of 2 and it is higher in the
middle than on the ends. I did this with a different data series and it was
lower in the middle than on the ends. Can anyone tell me why it curves up or
down?
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