When the participants who arrive for a study are assigned to a group on the basis of chance,
A) random assignment occurred
B) random sampling occurred
C) the statistical conclusions will be exact
D) all of the other alternatives are correct.

Question

Quizplus · Accepted Answer

Random assignment occurs when participants who arrive for a study are assigned to different groups purely based on chance, ensuring that each participant has an equal opportunity to be assigned to any given group. This method is crucial for controlling for confounding variables and establishing causality in experimental designs.

When the Participants Who Arrive for a Study Are Assigned