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Some New Three Level Designs for the Study of Quantitative Variables
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Numerical AnalysisQuantitative MethodsEngineeringEducationQuasi-experimentQuantitative VariablesStatistical AnalysisSecond DegreeCombinatorial Design TheoryDiscrete MathematicsApproximation TheoryStatisticsMethodological DevelopmentBlock DesignDesignAnalytic CombinatoricsIncomplete ThreeLevel Factorial DesignsIndustrial DesignExperiment DesignAlgebraic Method
A class of incomplete three level factorial designs useful for estimating the coefficients in a second degree graduating polynomial are described. The designs either meet, or approximately meet, the criterion of rotatability and for the most part can be orthogonally blocked. A fully worked example is included.