________ 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) Latin square design
B) Randomized block design
C) Solomon four-group design
D) Factorial design

Question

Quizplus · Accepted Answer

In a randomized block design, test units are blocked based on an external variable to ensure that the experimental and control groups are matched closely. This helps to reduce variability and increase the precision of the experiment. The Latin square design involves blocking on two variables, and the Solomon four-group design and factorial design are different types of experimental designs that do not necessarily involve blocking.

________ Is a Statistical Design in Which the Test Units