I am working on a project in which I am comparing how well and exponential, logistic and Gompertz model fit to tumour growth data. I have the equations for all three models but I don't know how to go about fitting the models to the data? Is there software (that's relatively simple) I can use or can I also do it manually?
I would prefer doing it manually but I have no way of accurately defining the parameters needed to fit to the data (like growth rate, carrying capacity etc.), which makes me think software is easier.
Thank you for your help.