_____________ can creep into a study if subjects are picked (intentionally or not) according to some criterion and not randomly.
A) Demand characteristic
B) Experimental mortality
C) Covariation
D) Selection bias

Question

Quizplus · Accepted Answer

Selection bias occurs when subjects are not randomly chosen, leading to a sample that may not accurately represent the population.

_____________ Can Creep into a Study If Subjects Are Picked