Refer to logit model (6.4) for a 2 2 K contingency table {n ijk }.
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Refer to logit model (6.4) for a 2 × 2 × K contingency table {nijk}.
a. Using dummy variables, write the log-likelihood function. Identify the sufficient statistics for the various parameters. Explain how to conduct exact conditional inference about the effect of X, controlling for Z.
b. Using a basic result for testing in exponential families, explain why uniformly most powerful unbiased tests of conditional XY independence are based on ∑k n11k.
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a The loglikelihood function for the logit model for a 2 2 K contingency table can be written as log L k i j nijk logpijk 1 pijk k i j nijk xijk where ...View the full answer
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