Dear all,
I have been trying to fit my data (only right censored) with gumbel
distribution using fitdistrplus. I am getting very high standard error. I have
been wondering why.
The followings are the outputs:
fit1=fitdistcens(dr0, "gumbel", start=list(a=99, b=0.6), optim.method=
"L-BFGS-B", lower = 0.0, upper = Inf)
> summary(fit1)
FITTING OF THE DISTRIBUTION ' gumbel ' BY MAXIMUM LIKELIHOOD ON CENSORED DATA
PARAMETERS
estimate Std. Error
a 97.8260371 3115.09
b 0.1115094 173.79
Loglikelihood: -9.749883e-10 AIC: 4 BIC: 21.21178
Correlation matrix:
a b
a 1.0000000 -0.6693773
b -0.6693773 1.0000000
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