Discuss the advantages of testing for interactions
Advantage of testing interaction in TWO WAY ANOVA are following:
1) It helps to under stand the combined effect of treatments on response variable. For example we have two independent variables 1) Study duration at two levels for 3 Hours and 6 Hours and 2) online game for 2 hours and for 4 hours.Suppose we want to test the combined effect of these two variables on Grades obtained so that we can get two know are these two variables effect together.
2) Also we get to know are these two factors are correlated or not. Interaction effect let to know us are these factors are associated or not.
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