Dear comunity, I ndd your help in order to find te error in my code because I've been trying to get the value of the two parameters of a weibull distibution (k and lamda)
nl(prevalence = ({k}/{lamda})*((dia_t2/{lamda})^({k}-1)*exp(-(dia_t2/{lamda})^{k})))
I have been modifying it but I always get the same message:
starting values invalid or some RHS variables have missing values
Could anybody help me to find where is the mistake?
Regards
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