Hello everyone, I recently started using the program Minitab, my goal is to make a one-way anova with covariates. I have to analyze the data for a basin in a day related to water level, flow rate and temperature of the reservoir. The problem is that I do not understand what are the covariates. I click STAT / ANOVA / GENERAL LINEAR MODEL and then covariates do not know what to insert between flow, water level, temperature and time. Will you help me?