which of the following can be used to determine age differences for birth groups? why do i do two anovas do you use anova first what test to use to determine the difference between different birth groups and different age groups is there a difference between birth group vs age group how to determine age groups what to use to determine baby birth group what tests do i use to test differences how to find age group differences in birth weight how many different birth groups in a cohort how to know the baby weight of an age group what test is used to find birth groups for a research project age of birth group versus age groups how many age groups in an age comparison how do you compare baby age groups on anova can an anova be used on birth groups of three different age groups? why use anavar to compare birth group when do you need to test a birth group how many age groups for an anova how does the anova measure birth weight