Coefficients de Student

Le tableau suivant fournit les valeurs de certains quantiles de la loi de Student pour différents intervalles de confiance.

k	75 %	80 %	85 %	90 %	95 %	97,5 %	99 %	99,5 %	99,75 %	99,9 %	99,95 %
1	1,000	1,376	1,963	3,078	6,314	12,71	31,82	63,66	127,3	318,3	636,6
2	0,816	1,061	1,386	1,886	2,920	4,303	6,965	9,925	14,09	22,33	31,60
3	0,765	0,978	1,250	1,638	2,353	3,182	4,541	5,841	7,453	10,21	12,92
4	0,741	0,941	1,190	1,533	2,132	2,776	3,747	4,604	5,598	7,173	8,610
5	0,727	0,920	1,156	1,476	2,015	2,571	3,365	4,032	4,773	5,893	6,869
6	0,718	0,906	1,134	1,440	1,943	2,447	3,143	3,707	4,317	5,208	5,959
7	0,711	0,896	1,119	1,415	1,895	2,365	2,998	3,499	4,029	4,785	5,408
8	0,706	0,889	1,108	1,397	1,860	2,306	2,896	3,355	3,833	4,501	5,041
9	0,703	0,883	1,100	1,383	1,833	2,262	2,821	3,250	3,690	4,297	4,781
10	0,700	0,879	1,093	1,372	1,812	2,228	2,764	3,169	3,581	4,144	4,587
11	0,697	0,876	1,088	1,363	1,796	2,201	2,718	3,106	3,497	4,025	4,437
12	0,695	0,873	1,083	1,356	1,782	2,179	2,681	3,055	3,428	3,930	4,318
13	0,694	0,870	1,079	1,350	1,771	2,160	2,650	3,012	3,372	3,852	4,221
14	0,692	0,868	1,076	1,345	1,761	2,145	2,624	2,977	3,326	3,787	4,140
15	0,691	0,866	1,074	1,341	1,753	2,131	2,602	2,947	3,286	3,733	4,073
16	0,690	0,865	1,071	1,337	1,746	2,120	2,583	2,921	3,252	3,686	4,015
17	0,689	0,863	1,069	1,333	1,740	2,110	2,567	2,898	3,222	3,646	3,965
18	0,688	0,862	1,067	1,330	1,734	2,101	2,552	2,878	3,197	3,610	3,922
19	0,688	0,861	1,066	1,328	1,729	2,093	2,539	2,861	3,174	3,579	3,883
20	0,687	0,860	1,064	1,325	1,725	2,086	2,528	2,845	3,153	3,552	3,850
21	0,686	0,859	1,063	1,323	1,721	2,080	2,518	2,831	3,135	3,527	3,819
22	0,686	0,858	1,061	1,321	1,717	2,074	2,508	2,819	3,119	3,505	3,792
23	0,685	0,858	1,060	1,319	1,714	2,069	2,500	2,807	3,104	3,485	3,767
24	0,685	0,857	1,059	1,318	1,711	2,064	2,492	2,797	3,091	3,467	3,745
25	0,684	0,856	1,058	1,316	1,708	2,060	2,485	2,787	3,078	3,450	3,725
26	0,684	0,856	1,058	1,315	1,706	2,056	2,479	2,779	3,067	3,435	3,707
27	0,684	0,855	1,057	1,314	1,703	2,052	2,473	2,771	3,057	3,421	3,690
28	0,683	0,855	1,056	1,313	1,701	2,048	2,467	2,763	3,047	3,408	3,674
29	0,683	0,854	1,055	1,311	1,699	2,045	2,462	2,756	3,038	3,396	3,659
30	0,683	0,854	1,055	1,310	1,697	2,042	2,457	2,750	3,030	3,385	3,646
40	0,681	0,851	1,050	1,303	1,684	2,021	2,423	2,704	2,971	3,307	3,551
50	0,679	0,849	1,047	1,299	1,676	2,009	2,403	2,678	2,937	3,261	3,496
60	0,679	0,848	1,045	1,296	1,671	2,000	2,390	2,660	2,915	3,232	3,460
80	0,678	0,846	1,043	1,292	1,664	1,990	2,374	2,639	2,887	3,195	3,416
100	0,677	0,845	1,042	1,290	1,660	1,984	2,364	2,626	2,871	3,174	3,390
120	0,677	0,845	1,041	1,289	1,658	1,980	2,358	2,617	2,860	3,160	3,373
∞	0,674	0,842	1,036	1,282	1,645	1,960	2,326	2,576	2,807	3,090	3,291