when to use the optim function for probit regression what does optim mean in a probit model what do optim values do r why do we need to normalize the predictors in probit probit function how to optimize probit in r can we run probit with a panel why would you run a probit function with inbuilt variable r optimisation is not finite do we need to normalize vmmin what to do with a probit function do you need to optimize for probit how to do probit analysis do we need to optimize in probit do we have to optimize when we run probit do you need to normalize predictor variable in probit how to run the optim function when do we need to normalize the predictors do we need to normalize predictor variables before using probit? can optim function be used to optimize