The reason why a particular participant's score was not the same as the other participants' average score (all of whom received the same treatment) is due to
A) variation caused by the IV
B) the mood of the subject
C) unidentified or unmeasured chance factors
D) bad research technique

Question

Quizplus · Accepted Answer

Unidentified or unmeasured chance factors can lead to variations in individual scores, even when all participants receive the same treatment.

The Reason Why a Particular Participant's Score Was Not the Same