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Question 27 of 42
Which of the following best describes blocking, a principle of experimental
design?
A. A feature of an experiment designed to isolate the variable under
observation
B. The selection of experimental subjects from a large group of units
or subjects and then randomly assigning members to treatment
and control groups using either a random number generator or a
random number table
C. An experiment that features many groups of subjects as well as
different kinds of tests, if possible
D. The separation of experimental subjects into groups that are as
similar as possible to control the effects of lurking variables
CLIDEAIT

Sagot :

GinnyAnsweridn

Final answer:

Blocking in experimental design involves grouping units into homogeneous blocks to reduce variation, as seen in the randomized complete block design (RCBD) used in agricultural field experiments.


Explanation:

Blocking is a form of design control in experiments where units are grouped into homogenous sets called blocks. One common type is the randomized complete block design (RCBD) used in agricultural field experiments to reduce variation. The purpose of blocking is to achieve homogeneous experimental units within the blocks.


Learn more about Experimental Design here:

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