Probabilidad

Ejemplo 1:
A partir de a base de datos del peso en kilogramos de 50 alumnos construye una base de datos de frecuencias no agrupados.
Datos de los pesos de 50 alumnos (kg) |
39 | 40 | 42 | 43 |44 | 44 | 45 | 46 | 46 | 47 |
48 | 48 | 48 | 49 | 49 | 50 | 50 | 50 | 50 | 51 |
51 | 51 | 51 | 51 | 52 | 52 | 52 | 53 | 53 | 54 |
54 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 57 |
58 | 59 | 59| 60 | 61 | 62 | 63 | 63 | 64 | 66 |

Dato | frecuencia | Frecuenciarelativa | Frecuenciaacumulada | FrecuenciaRa | F % |
39 | 1 | .02 | 1 | .02 | 2 |
40 | 1 | .02 | 2 | .04 | 4 |
42 | 1 |.02 | 3 | .06 | 6 |
43 | 1 | .02 | 4 | .08 | 8 |
44 | 2 | .04 | 6 | .12 | 12 |
45 | 1 | .02 | 7 | .14 | 14 |
46 | 2 | .04 | 9 | .18 | 18 |
47 | 1 | .02 | 10 | .20 | 20 |
48 | 3 | .06 | 13 |.26 | 26 |
49 | 2 | .04 | 15 | .30 | 30 |
50 | 4 | .08 | 19 | .38 | 38 |
51 | 5 | .10 | 24 | .48 | 48 |
52 | 3 | .06 | 27 | .54 | 54 |
53 | 2 | .04 | 29 | .58 | 58 |
54 | 2 | .04 | 31 |.62 | 62 |
55 | 3 | .06 | 34 | .68 | 68 |
56 | 5 | .10 | 39 | .78 | 78 |
57 | 1 | .02 | 40 | .80 | 80 |
58 | 1 | .02 | 41 | .82 | 82 |
59 | 2 | .04 | 43 | .86 | 86 |
60 | 1 | .02 | 44 | .88| 88 |
6 | 1 | .02 | 45 | .90 | 90 |
62 | 1 | .02 | 46 | .92 | 92 |
63 | 2 | .04 | 48 | .96 | 96 |
64 | 1 | .02 | 49 | .98 | 98 |
66 | 1 | .02 | 50 | 1.00 | 100 |
N= | 5.0 | 1.00 | | ||
Tomando en cuenta la base de datos construye una tabla de frecuencias para datos agrupados.
N° | Intervaloclase | Lim.real | F | Puntomedio | Fr | Fa | Fra | F%a | Fr(300) |
1 | 39-42 |38.5-42.5 | 3 | 40.5 | .06 | 3 | .06 | 6 | 21.6 |
2 | 43-46 | 42.5-46.5 | 6 | 44.5 | .12 | 9 | .18 | 18 | 43.2 |
3 | 47-50 | 46.5-50.5 | 10 | 48.5 | .20 | 19 | .38 | 38 | 72. |
4 | 51-54 | 50.5-54.5 |12 | 52.5 | .24 | 31 | .62 | 62 | 86.4 |
5 | 55-58 | 54.5-58.5 | 10 | 56.5 | .20 | 41 | .82 | 82 | 72 |
6 | 59-62 | 58.5-62.5 | 5 | 60.5 | .10 | 46 | .92 | 92 | 36 |
7 | 63-66 | 62.5-66.5 | 4...