Los cuantiles de distribución de Student (coeficientes de Student) son características numéricas ampliamente utilizadas en problemas de estadística matemática , como la construcción de intervalos de confianza y la prueba de hipótesis estadísticas .
Sea la función de distribución de Student con grados de libertad, y . Entonces , el cuantil de esta distribución es un número tal que
.La siguiente tabla se obtuvo mediante la función tinv . Archivado el 5 de abril de 2010 en MATLAB Wayback Machine . Para obtener el valor , debe encontrar la fila correspondiente al deseado , el número de grados de libertad calculado por la fórmula y la columna correspondiente al deseado . El número deseado está en la tabla en su intersección. Si necesita usar eso que no figura en la tabla, entonces los valores se pueden obtener en editores de hojas de cálculo (en Excel , la función STUDRASP; en LibreOffice - TINV). Además, la notación y no debe confundirse . En la segunda entrada, que muy a menudo se da como respuesta, estamos hablando del valor "p=1- ".
prueba de una cola | 1-0.9/2 (55%) | 1-0.8/2 (60%) | 1-0.7/2 (65%) | 1-0.6/2 (70%) | 1-0.5/2 (75%) | 1-0.4/2 (80%) | 1-0.3/2 (85%) | 1-0.2/2 (90%) | 1-0.1/2 (95%) | 1-0.05/2 (97.5%) | 1-0.02/2 (99%) | 1-0.01/2 (99.5%) | 1-0.005/2 (99.75%) | 1-0.002/2 (99.9%) | 1-0.001/2 (99.95%) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
prueba de dos colas (dos colas) | 1-0.9 ( =0.9, P=0.1 (10%) | 1-0.8 ( =0.8, P=0.2 (20%) | 1-0.7 ( =0.7, P=0.3 (30%) | 1-0,6 ( =0,6, P=0,4 (40 %) | 1-0.5 ( =0.5, P=0.5 (50%) | 1-0,4 ( =0,4, P=0,6 (60%) | 1-0.3 ( =0.3, P=0.7 (70%) | 1-0.2 ( =0.2, P=0.8 (80%) | 1-0.1 ( =0.1, P=0.9 (90%) | 1-0.05 ( =0.05, P=0.95 (95%) | 1-0.02 ( =0.02, P=0.98 (98%) | 1-0.01 ( =0.01, P=0.99 (99%) | 1-0.005 ( =0.005, P=0.995 (99.5%) | 1-0.002 ( =0.002, P=0.998 (99.8%) | 1-0.001 ( =0.001, P=0.999 (99.9%) |
una | 0.1584 | 0.3249 | 0.5095 | 0.7265 | 1.0000 | 1.3764 | 1.9626 | 3.0777 | 6.3138 | 12.7062 | 31.8205 | 63.657 | 127.32 | 318.31 | 636.62 |
2 | 0.1421 | 0.2887 | 0.4447 | 0.6172 | 0.8165 | 1.0607 | 1.3862 | 1.8856 | 2.9200 | 4.3027 | 6.9646 | 9.9248 | 14.089 | 22.327 | 31.599 |
3 | 0.1366 | 0.2767 | 0.4242 | 0.5844 | 0.7649 | 0.9785 | 1.2498 | 1.6377 | 2.3534 | 3.1824 | 4.5407 | 5.8409 | 7.4533 | 10.215 | 12.924 |
cuatro | 0.1338 | 0.2707 | 0.4142 | 0.5686 | 0.7407 | 0.9410 | 1.1896 | 1.5332 | 2.1318 | 2.7764 | 3.7469 | 4.6041 | 5.5976 | 7.1732 | 8.6103 |
5 | 0.1322 | 0.2672 | 0.4082 | 0.5594 | 0.7267 | 0.9195 | 1.1558 | 1.4759 | 2.0150 | 2.5706 | 3.3649 | 4.0321 | 4.7733 | 5.8934 | 6.8688 |
6 | 0.1311 | 0.2648 | 0.4043 | 0.5534 | 0.7176 | 0.9057 | 1.1342 | 1.4398 | 1.9432 | 2.4469 | 3.1427 | 3.7074 | 4.3168 | 5.2076 | 5.9588 |
7 | 0.1303 | 0.2632 | 0.4015 | 0.5491 | 0.7111 | 0.8960 | 1.1192 | 1.4149 | 1.8946 | 2.3646 | 2.9980 | 3.4995 | 4.0293 | 4.7853 | 5.4079 |
ocho | 0.1297 | 0.2619 | 0.3995 | 0.5459 | 0.7064 | 0.8889 | 1.1081 | 1.3968 | 1.8595 | 2.3060 | 2.8965 | 3.3554 | 3.8325 | 4.5008 | 5.0413 |
9 | 0.1293 | 0.2610 | 0.3979 | 0.5435 | 0.7027 | 0.8834 | 1.0997 | 1.3830 | 1.8331 | 2.2622 | 2.8214 | 3.2498 | 3.6897 | 4.2968 | 4.7809 |
diez | 0.1289 | 0.2602 | 0.3966 | 0.5415 | 0.6998 | 0.8791 | 1.0931 | 1.3722 | 1.8125 | 2.2281 | 2.7638 | 3.1693 | 3.5814 | 4.1437 | 4.5869 |
once | 0.1286 | 0.2596 | 0.3956 | 0.5399 | 0.6974 | 0.8755 | 1.0877 | 1.3634 | 1.7959 | 2.2010 | 2.7181 | 3.1058 | 3.4966 | 4.0247 | 4.437 |
12 | 0.1283 | 0.2590 | 0.3947 | 0.5386 | 0.6955 | 0.8726 | 1.0832 | 1.3562 | 1.7823 | 2.1788 | 2.6810 | 3.0545 | 3.4284 | 3.9296 | 4.3178 |
13 | 0.1281 | 0.2586 | 0.3940 | 0.5375 | 0.6938 | 0.8702 | 1.0795 | 1.3502 | 1.7709 | 2.1604 | 2.6503 | 3.0123 | 3.3725 | 3.852 | 4.2208 |
catorce | 0.1280 | 0.2582 | 0.3933 | 0.5366 | 0.6924 | 0.8681 | 1.0763 | 1.3450 | 1.7613 | 2.1448 | 2.6245 | 2.9768 | 3.3257 | 3.7874 | 4.1405 |
quince | 0.1278 | 0.2579 | 0.3928 | 0.5357 | 0.6912 | 0.8662 | 1.0735 | 1.3406 | 1.7531 | 2.1314 | 2.6025 | 2.9467 | 3.286 | 3.7328 | 4.0728 |
dieciséis | 0.1277 | 0.2576 | 0.3923 | 0.5350 | 0.6901 | 0.8647 | 1.0711 | 1.3368 | 1.7459 | 2.1199 | 2.5835 | 2.9208 | 3.252 | 3.6862 | 4.015 |
17 | 0.1276 | 0.2573 | 0.3919 | 0.5344 | 0.6892 | 0.8633 | 1.0690 | 1.3334 | 1.7396 | 2.1098 | 2.5669 | 2.8982 | 3.2224 | 3.6458 | 3.9651 |
Dieciocho | 0.1274 | 0.2571 | 0.3915 | 0.5338 | 0.6884 | 0.8620 | 1.0672 | 1.3304 | 1.7341 | 2.1009 | 2.5524 | 2.8784 | 3.1966 | 3.6105 | 3.9216 |
19 | 0.1274 | 0.2569 | 0.3912 | 0.5333 | 0.6876 | 0.8610 | 1.0655 | 1.3277 | 1.7291 | 2.0930 | 2.5395 | 2.8609 | 3.1737 | 3.5794 | 3.8834 |
veinte | 0.1273 | 0.2567 | 0.3909 | 0.5329 | 0.6870 | 0.8600 | 1.0640 | 1.3253 | 1.7247 | 2.0860 | 2.5280 | 2.8453 | 3.1534 | 3.5518 | 3.8495 |
21 | 0.1272 | 0.2566 | 0.3906 | 0.5325 | 0.6864 | 0.8591 | 1.0627 | 1.3232 | 1.7207 | 2.0796 | 2.5176 | 2.8314 | 3.1352 | 3.5272 | 3.8193 |
22 | 0.1271 | 0.2564 | 0.3904 | 0.5321 | 0.6858 | 0.8583 | 1.0614 | 1.3212 | 1.7171 | 2.0739 | 2.5083 | 2.8188 | 3.1188 | 3.505 | 3.7921 |
23 | 0.1271 | 0.2563 | 0.3902 | 0.5317 | 0.6853 | 0.8575 | 1.0603 | 1.3195 | 1.7139 | 2.0687 | 2.4999 | 2.8073 | 3.104 | 3.485 | 3.7676 |
24 | 0.1270 | 0.2562 | 0.3900 | 0.5314 | 0.6848 | 0.8569 | 1.0593 | 1.3178 | 1.7109 | 2.0639 | 2.4922 | 2.7969 | 3.0905 | 3.4668 | 3.7454 |
25 | 0.1269 | 0.2561 | 0.3898 | 0.5312 | 0.6844 | 0.8562 | 1.0584 | 1.3163 | 1.7081 | 2.0595 | 2.4851 | 2.7874 | 3.0782 | 3.4502 | 3.7251 |
26 | 0.1269 | 0.2560 | 0.3896 | 0.5309 | 0.6840 | 0.8557 | 1.0575 | 1.3150 | 1.7056 | 2.0555 | 2.4786 | 2.7787 | 3.0669 | 3.435 | 3.7066 |
27 | 0.1268 | 0.2559 | 0.3894 | 0.5306 | 0.6837 | 0.8551 | 1.0567 | 1.3137 | 1.7033 | 2.0518 | 2.4727 | 2.7707 | 3.0565 | 3.421 | 3.6896 |
28 | 0.1268 | 0.2558 | 0.3893 | 0.5304 | 0.6834 | 0.8546 | 1.0560 | 1.3125 | 1.7011 | 2.0484 | 2.4671 | 2.7633 | 3.0469 | 3.4082 | 3.6739 |
29 | 0.1268 | 0.2557 | 0.3892 | 0.5302 | 0.6830 | 0.8542 | 1.0553 | 1.3114 | 1.6991 | 2.0452 | 2.4620 | 2.7564 | 3.038 | 3.3962 | 3.6594 |
treinta | 0.1267 | 0.2556 | 0.3890 | 0.5300 | 0.6828 | 0.8538 | 1.0547 | 1.3104 | 1.6973 | 2.0423 | 2.4573 | 2.75 | 3.0298 | 3.3852 | 3.646 |
31 | 0.1267 | 0.2555 | 0.3889 | 0.5298 | 0.6825 | 0.8534 | 1.0541 | 1.3095 | 1.6955 | 2.0395 | 2.4528 | 2.744 | 3.0221 | 3.3749 | 3.6335 |
32 | 0.1267 | 0.2555 | 0.3888 | 0.5297 | 0.6822 | 0.8530 | 1.0535 | 1.3086 | 1.6939 | 2.0369 | 2.4487 | 2.7385 | 3.0149 | 3.3653 | 3.6218 |
33 | 0.1266 | 0.2554 | 0.3887 | 0.5295 | 0.6820 | 0.8526 | 1.0530 | 1.3077 | 1.6924 | 2.0345 | 2.4448 | 2.7333 | 3.0082 | 3.3563 | 3.6109 |
34 | 0.1266 | 0.2553 | 0.3886 | 0.5294 | 0.6818 | 0.8523 | 1.0525 | 1.3070 | 1.6909 | 2.0322 | 2.4411 | 2.7284 | 3.002 | 3.3479 | 3.6007 |
35 | 0.1266 | 0.2553 | 0.3885 | 0.5292 | 0.6816 | 0.8520 | 1.0520 | 1.3062 | 1.6896 | 2.0301 | 2.4377 | 2.7238 | 2.996 | 3.34 | 3.5911 |
36 | 0.1266 | 0.2552 | 0.3884 | 0.5291 | 0.6814 | 0.8517 | 1.0516 | 1.3055 | 1.6883 | 2.0281 | 2.4345 | 2.7195 | 2.9905 | 3.3326 | 3.5821 |
37 | 0.1265 | 0.2552 | 0.3883 | 0.5289 | 0.6812 | 0.8514 | 1.0512 | 1.3049 | 1.6871 | 2.0262 | 2.4314 | 2.7154 | 2.9852 | 3.3256 | 3.5737 |
38 | 0.1265 | 0.2551 | 0.3882 | 0.5288 | 0.6810 | 0.8512 | 1.0508 | 1.3042 | 1.6860 | 2.0244 | 2.4286 | 2.7116 | 2.9803 | 3.319 | 3.5657 |
39 | 0.1265 | 0.2551 | 0.3882 | 0.5287 | 0.6808 | 0.8509 | 1.0504 | 1.3036 | 1.6849 | 2.0227 | 2.4258 | 2.7079 | 2.9756 | 3.3128 | 3.5581 |
40 | 0.1265 | 0.2550 | 0.3881 | 0.5286 | 0.6807 | 0.8507 | 1.0500 | 1.3031 | 1.6839 | 2.0211 | 2.4233 | 2.7045 | 2.9712 | 3.3069 | 3.551 |
41 | 0.1264 | 0.2550 | 0.3880 | 0.5285 | 0.6805 | 0.8505 | 1.0497 | 1.3025 | 1.6829 | 2.0195 | 2.4208 | 2.7012 | 2.967 | 3.3013 | 3.5442 |
42 | 0.1264 | 0.2550 | 0.3880 | 0.5284 | 0.6804 | 0.8503 | 1.0494 | 1.3020 | 1.6820 | 2.0181 | 2.4185 | 2.6981 | 2.963 | 3.296 | 3.5377 |
43 | 0.1264 | 0.2549 | 0.3879 | 0.5283 | 0.6802 | 0.8501 | 1.0491 | 1.3016 | 1.6811 | 2.0167 | 2.4163 | 2.6951 | 2.9592 | 3.2909 | 3.5316 |
44 | 0.1264 | 0.2549 | 0.3878 | 0.5282 | 0.6801 | 0.8499 | 1.0488 | 1.3011 | 1.6802 | 2.0154 | 2.4141 | 2.6923 | 2.9555 | 3.2861 | 3.5258 |
45 | 0.1264 | 0.2549 | 0.3878 | 0.5281 | 0.6800 | 0.8497 | 1.0485 | 1.3006 | 1.6794 | 2.0141 | 2.4121 | 2.6896 | 2.9521 | 3.2815 | 3.5203 |
46 | 0.1264 | 0.2548 | 0.3877 | 0.5281 | 0.6799 | 0.8495 | 1.0483 | 1.3002 | 1.6787 | 2.0129 | 2.4102 | 2.687 | 2.9488 | 3.2771 | 3.515 |
47 | 0.1263 | 0.2548 | 0.3877 | 0.5280 | 0.6797 | 0.8493 | 1.0480 | 1.2998 | 1.6779 | 2.0117 | 2.4083 | 2.6846 | 2.9456 | 3.2729 | 3.5099 |
48 | 0.1263 | 0.2548 | 0.3876 | 0.5279 | 0.6796 | 0.8492 | 1.0478 | 1.2994 | 1.6772 | 2.0106 | 2.4066 | 2.6822 | 2.9426 | 3.2689 | 3.5051 |
49 | 0.1263 | 0.2547 | 0.3876 | 0.5278 | 0.6795 | 0.8490 | 1.0475 | 1.2991 | 1.6766 | 2.0096 | 2.4049 | 2.68 | 2.9397 | 3.2651 | 3.5004 |
cincuenta | 0.1263 | 0.2547 | 0.3875 | 0.5278 | 0.6794 | 0.8489 | 1.0473 | 1.2987 | 1.6759 | 2.0086 | 2.4033 | 2.6778 | 2.937 | 3.2614 | 3.496 |
100 | 0.1260 | 0.2540 | 0.3864 | 0.5261 | 0.6770 | 0.8452 | 1.0418 | 1.2901 | 1.6602 | 1.9840 | 2.3642 | 2.6259 | 2.8707 | 3.1737 | 3.3905 |
1000 | 0.1257 | 0.2534 | 0.3854 | 0.5246 | 0.6747 | 0.8420 | 1.0370 | 1.2824 | 1.6464 | 1.9623 | 2.3301 | 2.5808 | 2.8133 | 3.0984 | 3.3003 |
inf | 0.1257 | 0.2534 | 0.3853 | 0.5244 | 0.6745 | 0.8416 | 1.0364 | 1.2816 | 1.6449 | 1.9600 | 2.3263 | 2.5758 | 2.8070 | 3.0902 | 3.2905 |