====== Research Designs for Testing Bivariate Hypotheses ====== {{vimeo>132531682?large|Research Designs for Testing Bivariate Hypotheses}} {{tag>correlational_research cross-sectional_research interrupted_time_series_design classical_experiment experiment experimental_group control_group random_assignment posttest pretest}} {{tag>research_methods:ut research_methods:video}} /* Number 4 0 */