Improving on exact tests by approximate conditioning
通过近似条件化改进精确检验
The often conservative nature, for discrete data, of so-called exact tests seems usually the result of unnecessarily precise conditioning. We consider avoiding this by conditioning only approximately on the sufficient statistics for nuisance parameters. Modest relaxation of conditioning results in small loss in terms of the rationale for conditional inference, but can greatly reduce the difficulties caused by discreteness. Exact calculations of p-values based on approximate…