Randomized_blocked_design_week_11 - Design of experiments...

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Design of experimentsAn experiment with randomized blocked design (RBD)DefinitionImportanceHypothesisANOVA table for an RBDResidual analysis and model checking
A randomized blocked design (RBD) is a plan for collecting data in which each of k treatments is measured once in each of b blocks. A block is factor that may affect the measured result but it is not of primary interest The order of the treatments within the blocks is randomized (the order of the treatment-block combination is not randomizedEXAMPLE An experiment was performed to determine the effect of four different chemicals on the strength of a fabric. Five fabric samples were selected, and a RBD was run by testing each chemical type once in random order on each fabric sample.a) What is the experimental factor? What are the treatmentsb) What is the block??COMPLETE RANDOMIZED BLOCKED DESIGN
DATA LAYOUT FOR A SINGLE FACTOR CRDFabric sampleChemical type1234Block totalsBlock averages11.32.21.83.99.22.3021.62.41.74.410.12.53

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