why is the fit of the curve bad what is the fit of function sigmoid function to fit to curve why is a fit so bad why is my fit so bad why is the fit so bad which graph does fit thesigmoid curve why is fit so bad why is the fit so bad why is my fit so bad why is fit so bad? why is my fit so bad? how to fit a function with black points why is my fit so bad why is fit so bad how to fit a function in sigmoid what is bad about fitting a function why is it bad to fit a function why is fit so bad why is sigmoid function bad?