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Q49Section I (Objective (Q1–Q80))49 of 80

Design of Experiments — zero error df in a saturated two-way model

Consider a two-way classification with one observation per cell and interaction present yij=μ+αi+βj+γij+eijy_{ij}=\mu+\alpha_i+\beta_j+\gamma_{ij}+e_{ij}, i=1,2,3,4,5i=1,2,3,4,5; j=1,2,3,4j=1,2,3,4. Then the degrees of freedom for error SS are

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