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发帖数: 35 | 1 Does anyone know 'Quadratic Model with Plateau'. we want to use this model
to calculate the X threshold where Y begin to decline, with confidence
interval.
The attached is out data. Y=l/[1+A× exp(B×X)], X Y should fit this model.
How to use SAS to graph it and predict after get this model? Who has the
procedure? Thanks a lot.
X Y
0.861 1.000
0.760 0.987
0.680 1.038
0.673 0.976
0.573 1.023
0.452 0.877
0.445 0.805
0.329 0.574
0.221 0.407
0.214 0.211
0.136 0.184
0.089 0.136 |
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