Determine whether the samples are independent or dependent. 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

Determine whether the samples are independent or dependent. 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

Quizplus · Accepted Answer

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

Determine Whether the Samples Are Independent or Dependent