A study in which the investigator has the ability to directly influence or manipulate any of the elements involved in the investigation is called a(n)
A)observational study
B)census study
C)experimental study
D)replicated study
E)gratuitous study

Question

Quizplus · Accepted Answer

An experimental study is characterized by the investigator's ability to manipulate variables and directly influence the elements involved in the investigation, distinguishing it from observational studies where the investigator does not intervene.

A Study in Which the Investigator Has the Ability to Directly