A drug trial assigns 50 patients to the drug and 50 to placebo, rather than 1 to each.
Using many subjects in each group is an example of which experimental principle?
- A
Blocking
- Bcheck_circle
Replication
- C
Random assignment
- D
Blinding
Explanation
Replication is the use of multiple experimental units in each treatment group, which provides estimates of variability and increases reliability.