CHAPTER 5 DESIGN OF EXPERIMENT
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IMPORTANT QUESTIONS
(Design of Experiment)
1. Explain the terms with an examples: Experiment, Treatment, Experimental units, Blocks,
Experimental error, Precision. Also explain basic principles of experimental design.
2. What do you mean by Latin Square Design? Write down its merit and demerit. Set up the analysis of
variance for the following result of design.
A 10 B 15 C 20
B 25 C 10 A 15
C 25 A 20 B 15
Also how LSD is more efficient than CRD and RBD in this information.
3. Consider the partially completed ANOVA table table below. Complete the ANOVA table and answer
the following.
i) What design was employed?
ii) How many treatments were compared?
4. Explain the fundamental concepts of Latin Square Design (LSD) with its necessary conditions. Perform
the analysis of variance from the following data and make final comments based on the analysis
A 5 B 10 C 15
C 20 A 15 B 10
B 20 C 5 A 10
5. State mathematical model for Statistical analysis of m x m LSD for one observation per experimental
unit. Also prepare a dummy ANOVA table for this.
6. State and explain the mathematical model for randomized block design(RBD). Explain all the steps to
be adopted to carry out the analysis, merit and demerit and finally prepare the ANOVA table.
7. Consider a completely randomized design with 4 treatments with 7 observations in each. For the
ANOVA summary table below, fill in all the missing results. Also indicate your statistical decision.
8. State and explain the mathematical model for Completely randomized design(CRD). Explain all the
steps to be adopted to carry out the analysis, merit and demerit and finally prepare the ANOVA table.
9. Analysis the given data.
B 40 C 60 A 40 B 50
C 50 A 70 A 45 D 60
C 55 A 50 B 60 A 70
10. The table given below represents the yield of 3 varieties in 4 replicate experiment for which one
observation is missing. Estimate the missing value and analyses the data.
11. Differentiate between CRD and RBD.
12. Differentiate between RBD and LSD.