Question

A group of scientists is testing a new pain killer called Dolorocide (Latin for pain killer). They have three groups of patients with severe

pain
Patients in Group #1 receive pills with no pain medication (placebo).
Patients in Group #2 receive Morphine, a pain killer used for the past 200 years.
Patients in Group #3 receive the new drug, Dolorocide.
They ask the patients to rate their level of pain on a scale of 0-10, with 10 being the worst pain.
The dependent variable of the experiment is
a) The types of pain killers
b) The side effects of pain killers
c) The cost of pain killers
d) The pain levels reported by patients

Answer 1

The dependent variable in this experiment is the pain levels reported by patients.

Step-by-step explanation:

The dependent variable in this experiment is d) The pain levels reported by patients. The scientists are testing the effectiveness of a new pain killer called Dolorocide, and to measure its effectiveness, they ask the patients in each group to rate their level of pain on a scale of 0-10. This rating is the dependent variable because it changes based on the different pain killers given to each group.