Determine whether the samples are dependent or independent. The effectiveness of a headache medicine is tested by measuring the intensity of a headache in patients before and after drug treatment. The data consist of
Before and after intensities for each patient.
A) Independent samples
B) Dependent samples

Question

Quizplus · Accepted Answer

The samples in this scenario are dependent because the measurement taken after drug treatment is related to and affected by the measurement taken before the treatment. Thus, the before and after intensity measurements are paired for each patient, making them dependent samples.

Determine Whether the Samples Are Dependent or Independent