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) Dependent samples
B) Independent samples

Question

Quizplus · Accepted Answer

The samples are dependent because the same patients are measured twice, before and after the treatment, making their before and after intensities related to each other.

Determine Whether the Samples Are Dependent or Independent