COMMENT --------------------------------------- Betahat - Ratkowsky3 ---------------------------------------
INPATH C:\Projects\Code\Beta\Benchmarks\Nonlinear
OPEN Rat43_NIST.PRN
USE 1 15
'NLS Y   b1/((1+exp(b2-b3*x))**(1/b4)) / INPUTB B1=100 B2=10 B3=1 B4=1
NLS Y   b1/((1+exp(b2-b3*x))**(1/b4)) / INPUTB B1=700 B2=5 B3=0.75 B4=1.3

COMMENT --------------------------------------- NIST - Ratkowsky3 ---------------------------------------
'Source is http://www.itl.nist.gov/div898/strd/nls/data/ratkowsky3.shtml
COMMENT 
COMMENT           Starting Values                  Certified Values
COMMENT  
COMMENT         Start 1     Start 2           Parameter     Standard Deviation
COMMENT   b1 =   100         700           6.9964151270E+02  1.6302297817E+01
COMMENT   b2 =    10           5           5.2771253025E+00  2.0828735829E+00
COMMENT   b3 =     1           0.75        7.5962938329E-01  1.9566123451E-01
COMMENT   b4 =     1           1.3         1.2792483859E+00  6.8761936385E-01
COMMENT
COMMENT Residual Sum of Squares:                    8.7864049080E+03
COMMENT Residual Standard Deviation:                2.8262414662E+01
COMMENT Degrees of Freedom:                                9
COMMENT Number of Observations:                           15 
COMMENT