Table 2.

Performance of the covariance diagnostic for the multivariate negative-binomial model, based upon 1000 simulations for various scenarios of , p, , and T for sites. EP, EP, and EP are the proportion of simulations where both diagnostics are negative, one or more diagnostic is negative, or both diagnostics are positive, respectively. EP, EP, and EP are the corresponding proportions of those where

	p		T	EP	EP	EP	EP	EP	EP
2	0.10	1.25	2	0.192	0.938	0.3	0.853	0.388	0.072
2	0.10	1.25	3	0.093	0.925	0.271	0.841	0.426	0.131
2	0.10	5.00	2	0.199	0.92	0.296	0.804	0.274	0.113
2	0.10	5.00	3	0.104	0.904	0.264	0.822	0.293	0.126
2	0.25	1.25	2	0.046	0.913	0.229	0.777	0.571	0.07
2	0.25	1.25	3	0.002	1	0.138	0.681	0.71	0.048
2	0.25	5.00	2	0.064	0.953	0.184	0.826	0.411	0.097
2	0.25	5.00	3	0.011	1	0.103	0.748	0.473	0.047
5	0.10	1.25	2	0.088	0.966	0.347	0.813	0.472	0.121
5	0.10	1.25	3	0.023	1	0.333	0.757	0.52	0.113
5	0.10	5.00	2	0.139	0.935	0.305	0.803	0.282	0.128
5	0.10	5.00	3	0.064	0.906	0.252	0.829	0.343	0.143
5	0.25	1.25	2	0.006	1	0.217	0.71	0.746	0.068
5	0.25	1.25	3	0	–	0.137	0.533	0.843	0.047
5	0.25	5.00	2	0.038	0.763	0.193	0.741	0.555	0.05
5	0.25	5.00	3	0.002	0.5	0.108	0.694	0.678	0.028
10	0.10	1.25	2	0.032	0.969	0.342	0.813	0.596	0.139
10	0.10	1.25	3	0.005	1	0.325	0.775	0.65	0.097
10	0.10	5.00	2	0.116	0.931	0.322	0.835	0.378	0.108
10	0.10	5.00	3	0.027	0.926	0.302	0.844	0.437	0.105
10	0.25	1.25	2	0	–	0.193	0.674	0.806	0.069
10	0.25	1.25	3	0	–	0.125	0.472	0.87	0.029
10	0.25	5.00	2	0.01	0.9	0.156	0.756	0.726	0.054
10	0.25	5.00	3	0.001	1	0.09	0.656	0.817	0.026