Transcription of CHAPTER 8. RANDOMIZED COMPLETE BLOCK DESIGN WITH …
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CHAPTER 8. RANDOMIZED COMPLETE BLOCK DESIGN WITH AND WITHOUT SUBSAMPLES The RANDOMIZED COMPLETE BLOCK DESIGN (RCBD) is perhaps the most commonly encountered DESIGN that can be analyzed as a two-way AOV. In this DESIGN , a set of experimental units is grouped (blocked) in a way that minimizes the variability among the units within groups (blocks). The objective is to keep the experimental error within each BLOCK as well as possible. Each BLOCK contains a COMPLETE set of treatments, therefore differences among blocks are not due to treatments, and this variability can be estimated as a separate source of variation.
The six treatments in each block were randomly assigned to the six plots by drawing random numbers from Appendix Table A-1 in the manner described in Chapter 7. Note in this case that there are only six random numbers (1 - 6) to be drawn for each block, e.g., for block 1 the random sequence was 3, 6, 5, 2, 1, and 4.
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