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block design.ppt

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					    Randomized Complete Block
         Design (RCBD)
       Or Two Way ANOVA
• Useful when there is one way variation in
  the experimental material
• Construct blocks perpendicular to the
  variation in the data

If there are no differences among blocks, then
RCBD would not contribute to improve precision in
detecting differences among treatment means
        ANOVA for Two Way



                     DF          SS      MSS     Fcal
SOV
Treatment   (t-1)         =4    83.84    20.96   3.87*
Block       (b-1)         =4    49.84    12.46
Error       (b-1)(t-1)    =16   86.56    5.41
TOTAL       (bt = n)-1    =24   220.24

				
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posted:1/9/2013
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Description: block design.ppt