is a statistical design in which the test units are blocked on the basis of an external variable to ensure that the various experimental and control groups are matched closely on that variable.
A) Solomon four- group design
B) Latin square design
C) Randomized block design
D) Factorial design

Question

Quizplus · Accepted Answer

A randomized block design is used to control for the effects of external variables by blocking test units into groups that are similar, ensuring that the experimental and control groups are matched closely on that variable.

Is a Statistical Design in Which the Test Units Are