There are two possible ways for collecting samples in performing the
analysis of variance about one factor. When the sample for each population
is collected independently, it is called a completely randomized design. If
every chosen experimental unit will generate an observation for each
population, it is called a randomized block design.
(a) Which design will be better and why? (6%)
(b) What are the random processes involved in completely randomized
design and randomized block design? (6%)
(c) In a randomized block design, discuss whether it is appropriate to
consider the experimental unit as a second factor for significance test,
and explain. (6%)
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