Which is not a critical part of designing a good experiment?
A)Control of known sources of variability.
B)Replication of the on a sufficient number of subjects.
C)Random selection of subjects.
D)Random assignment of subjects to treatments.
E)All of these are important.

Question

Quizplus · Accepted Answer

Random selection of subjects is not always necessary for a good experiment, especially if the focus is on establishing causality rather than generalizing to a larger population. Random assignment, control, and replication are more critical for internal validity.

Which Is Not a Critical Part of Designing a Good