Question

question 1 1 pts which one of the following answer options best represents the basic principles of experimental design? controlling sources of variation, using replication with enough subjects, and ensuring treatments are double - blind blinding subjects to treatments, categorizing subjects by treatment groups, and replicating until results are statistically significant randomizing the assignment of subjects, replicating across multiple subjects, and carefully recording all measurements randomly selecting subjects, ensuring informed consent, and controlling potential sources of confounding controlling for outside variables, randomizing treatment assignments, and replicating with a sufficient sample size

Explanation:

The basic principles of experimental design are control (managing outside variables to isolate the effect of the treatment), randomization (randomly assigning treatments to subjects to avoid bias), and replication (using a sufficient sample size to ensure reliable results). The option that includes these three key elements is the correct one.

Answer:

E. Controlling for outside variables, randomizing treatment assignments, and replicating with a sufficient sample size