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	—¼‘¤			•Ð‘¤		
df�_Pr	0.05	0.01	0.001	0.05	0.01	0.001
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1	12.706	63.657	636.620	6.314	31.821	318.310
2	4.303	9.925	31.598	2.920	6.965	22.327
3	3.183	5.841	12.924	2.353	4.541	10.214
4	2.776	4.604	8.610	2.132	3.747	7.173
5	2.571	4.032	6.869	2.015	3.365	5.893
6	2.447	3.707	5.959	1.943	3.143	5.208
7	2.365	3.500	5.408	1.895	2.998	4.785
8	2.306	3.355	5.041	1.860	2.896	4.501
9	2.262	3.250	4.781	1.833	2.821	4.297
10	2.228	3.169	4.587	1.813	2.764	4.144
11	2.201	3.106	4.437	1.796	2.718	4.025
12	2.179	3.055	4.318	1.782	2.681	3.930
13	2.160	3.012	4.221	1.771	2.650	3.852
14	2.145	2.977	4.140	1.761	2.624	3.787
15	2.132	2.947	4.073	1.753	2.602	3.733
16	2.120	2.921	4.015	1.746	2.583	3.686
17	2.110	2.898	3.965	1.740	2.567	3.646
18	2.101	2.878	3.922	1.734	2.552	3.610
19	2.093	2.861	3.883	1.729	2.539	3.579
20	2.086	2.845	3.850	1.725	2.528	3.552
21	2.080	2.831	3.819	1.721	2.518	3.527
22	2.074	2.819	3.792	1.717	2.508	3.505
23	2.069	2.807	3.767	1.714	2.500	3.485
24	2.064	2.797	3.745	1.711	2.492	3.467
25	2.060	2.787	3.725	1.708	2.485	3.450
26	2.056	2.779	3.707	1.706	2.479	3.435
27	2.052	2.771	3.690	1.703	2.473	3.421
28	2.048	2.763	3.674	1.701	2.467	3.408
29	2.045	2.756	3.659	1.699	2.462	3.396
30	2.042	2.750	3.646	1.697	2.457	3.385
40	2.021	2.705	3.551	1.684	2.423	3.307
60	2.000	2.660	3.460	1.671	2.391	3.232
120	1.980	2.617	3.373	1.658	2.358	3.160
�‡	1.960	2.576	3.291	1.645	2.326	3.090