Moderation effect analysis or interaction analysis is an analysis aim to investigate whether the causal relationship between pair of variables, antecedent and outcome, was changed subject to change in specified values of moderators in pick-a-point fashion or in a range of values from Johnson-Neyman region. Test could be conducted through bootstrapping algorithm or t-test. In order to test for conditional effects of moderators, t-test and/or bootstrapping still being adapted with some mathematical manipulation and also with much helpful of line graph.