1. you are conducting a study on the effectiveness of a new medication to treat
depression. all participants in your study are known to be suffering from depression
and are randomly assigned to one of four groups who receive four different dosages
(0 mg, 50mg, 100 mg, 200 mg). after they have been taking the drug for 4 months
participants in your study will complete a questionnaire that measures self-reported
depression symptoms on a scale of 0 (no symptoms at all) to 50 (severe symptoms).
a. what is the independent variable? (1 point)
b. what is the dependent variable? (1 point)
c. why would it be important for you to use random assignment to determine
which participants will receive which dosages? (2 points)