[R] Your help plz - (statistical problem)
K.V.ANANTHA PADMANABHA
kv_padmanabha at yahoo.com
Fri Aug 22 12:04:56 CEST 2003
Hi David,
Please help me out to resolve the following
statistical problem.
For the following data
X Y
0 21.5
0 21.78
0.03 21.5
0.09 16.3
0.27 9.9
0.81 6.13
2.43 5.17
How to put the logistic curve was fitted for the
following model
C
Y = --------------
(1 + (X/X0)^b)
Where Y is the total no. of juveniles per parent
animals alive at the end of the test and X is the
concentartion.
C = the expected no. of juveniles when X = 0
X0 = the EC50 in the population
b = the slope parameter
I expect the results as early as possible.
Thanks & regards
K.V.Anantha Padmanabha
Rallis India Limited
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