Equation for differences between suppliers
Posted: Mon Oct 10, 2016 3:21 am
Hello,
I have a dataset with data from three different suppliers. I want to see if there are differences with the suppliers as the independant variables.
I tried giving them dummy variables in excel (1 and 0) but it gives me a near perfect collinearity error.
Does anyone know how I can bypass this?
Thanks in advance
I have a dataset with data from three different suppliers. I want to see if there are differences with the suppliers as the independant variables.
I tried giving them dummy variables in excel (1 and 0) but it gives me a near perfect collinearity error.
Does anyone know how I can bypass this?
Thanks in advance