Which is true about randomized experiments?
I. Randomization reduces the effects of confounding variables.
II. Random assignment of treatments allows results to be generalized to the larger population.
III. Blocking can be used to reduce the within-treatment variability.
A) III only
B) I and III
C) I, II, and III
D) I only
E) II only

Question

Quizplus · Accepted Answer

Randomization helps control confounding variables (I) and blocking reduces within-treatment variability (III). However, random assignment does not ensure generalizability to the larger population (II).

Which Is True About Randomized Experiments