Formula for polynomial function / Finding Area under the Curve
So, I would like to find the Area under some curves. Actually quite many of them, so using the Trapezoid method manually won't work, and can't imagine it would be valid enough. There is some kind of function for this for ROC-curves, but is it usable for finding the AUC in curves, measureing blood substances over time (five times)?
However, if I get a formula for a fitted Curve, I can use it to find...