The most important characteristic of two independent samples is
A) we measure the same subjects on two separate times.
B) the subjects in one sample are part of the same family as subjects in the other sample.
C) the set of scores for one sample is uncorrelated with the scores in the other sample.
D) the subjects in a group are people who know each other.

Question

Quizplus · Accepted Answer

The most important characteristic of two independent samples is that the set of scores for one sample is uncorrelated with the scores in the other sample. This is what makes them independent - they are not related or connected in any way. Options A and D refer to repeated measures or clustered samples, which are not independent. Option B refers to a specific type of dependent samples, where the lack of independence is due to shared genetics. Therefore, the correct answer is C.

The Most Important Characteristic of Two Independent Samples Is