is type a random factor in an aNOVA is time random or repeated are type and treatment random why is time a covariate how many times does the type of blood interact with time what does Type of blood do with time? is type the a covariate in the random selection process? which of the following would be a covariate for the type of blood? how many times a patient is blood tested in an experiment which is the main effect of type of blood on treatment? are time and time covariates is time a variable is time a covariate of type or treatment is time a random factor difference between type and treatment is time a covariate for type of blood are time random or fixed are time a random factor or repeatable factor which is more random random or repeatable measures? what is an example of comparing time and type of blood?