For the quasi symmetry model (10 19), let a a X a Y Show that one can express it equivalently as log ab a ab , with ab ba Hence, one needs only one set of main effect parameters

Question: For the quasi-symmetry model (10.19), let a = a X a Y . Show that one can express it equivalently as

For the quasi-symmetry model (10.19), let λ_a = λ_a^X – λ_a^Y. Show that one can express it equivalently as log µ_ab = λ + λ_a + λ^*_ab, with λ^*_ab = λ^*_ba. Hence, one needs only one set of main-effect parameters.

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