Explain the difference between an experiment that employs

Chapter 9, Problem 83SE

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QUESTION:

Explain the difference between an experiment that employs a completely randomized design and one that employs a randomized block design.

Questions & Answers

QUESTION:

Explain the difference between an experiment that employs a completely randomized design and one that employs a randomized block design.

ANSWER:

Step 1 of 3

The difference between R.B.D and C.R.D:

i)   Randomized complete block design is superior to completely block randomization.

ii)  Blocking reduces the sum of squares due to experimental error. So it  increases the efficiency of the design as compared to C.R.D.

iii) The design is feasible with any number of treatments and blocks subject to the basic requirements of the design. For instance, there should be at least two blocks to provide an estimate of error variance and a test of significance.

iv)  The number of replicates should be enough to contribute at least 12 d.f. To error.

v)  Control treatment can easily be included without causing any complications in the analysis of data.

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