which is more dummy or ancova? what is ancova vs multiple regression why not use ancova what is ancovva used for why is ancova useful what is the difference between a cathode and ancova in the linear model? why do acva's have small variance when can we test the interaction between two continuous variables? how many stages of ancova why are there no significant interactions between variables? when does ancovva work what is the best method to combine multiple regressions? can ancovva model detect interaction with multiple variables? why do you use ancová dummy analysis with ANCOVA can we use anchová to test interaction with multiple variables what is the best way to use a hierarchical regression model? can ancová include multiple variables why use ancová in an experimental design can anabova predict interactions