can you fit nb distribution on sigma what functions do gamlss use what is a zero inflated nb what is fitdist what is the sigma of a function in nbinom does fitdist sigma what is the error in gamlss function what is the sigma of the nb range fitdist value for sigma gamlss fitdist error code how to fit zero inflated numeric distribution how to calculate sigma in nb why is mu inflated in fitdist? what is a zero inflated distribution what is the function mle what is the error code for fitdist what is the correct way to use fitdist what is sigma in fitdist why do you need to add sigma to fitdist can you fit a nb function