4.

各个系数的方差

Variance of agreement coefficients^*

pr	n	Kappa%	AC1%	CEA%
*: ra and rb represent the probability of rater A and rater B to perform a random rating respectively, ra=rb=0.05, variance of agreement coeffi-cients is based on 10 000 replicate samples.
0.55	20	5.30	5.19	11.02
	60	1.31	2.87	9.03
	80	0.96	1.55	9.02
	100	0.76	1.25	8.33
0.75	20	6.56	6.08	2.97
	60	0.43	1.65	1.20
	80	0.31	1.22	0.86
	100	0.24	0.95	0.66
0.85	20	1.94	1.97	1.26
	60	0.40	0.77	0.51
	80	0.31	0.58	0.38
	100	0.23	0.44	0.29
0.95	20	4.20	0.41	0.26
	60	1.22	0.17	0.13
	80	1.17	0.13	0.10
	100	0.85	0.12	0.09