what is the purpose of joint variation what are the joint variations of responses how is joint variation tested in the interventional study what is var03 variable which method should a joint variation of response be used? what is the test for joint variation what is the variable variance between an interventional and logistic interventional study joint variation of responses definition what is the hypothesis to test for the greater variation in the var what are the joint variations of responses in the interventional study and what is the purpose what type of variation is used in joint variations of responses what is the purpose of intergroup variability when can i test joint variation in interventional studies how to assess joint variations of responses in interventional trial which method should i use for assessing joint variation of responses what is the purpose of var02 in a joint variation what is the difference between var02 and var03? how to assess a variation in var var03 and var02 variables what type of study involves joint variation of responses