a disclaimer beforehand: I don't have a proper math/statistics education background. I have a set of data which comes from the same population (n): Weight gain (g): mean; SD Weight (kg): mean; SD Duration (days): mean; SD
is it possible to combine those variables into a new predefined variable called weight gain rate (g kg^-1 day^-1) and if so, how to find the mean and standard deviation of such variable?
thank you very much for the help.