In some studies that use observational rather than experimental data, investigators develop ____, which conceptually predict what they would see if a particular factor had no effect.
A) control treatments
B) null models
C) experimental controls
D) null treatments
E) experimental models

Question

Quizplus · Accepted Answer

Null models are developed in observational studies to conceptually predict the outcomes if a particular factor had no effect, serving as a theoretical baseline for comparison.

In Some Studies That Use Observational Rather Than Experimental Data