Estadistika

1.- Recolección de datos
12 | 10 | 16 | 24 | 12 | 14 | 18 | 23 |
31 | 14 | 15 | 19 | 17 | 9 | 19 | 28 |
24 | 16 | 21 | 13 | 20 | 12 | 22 | 18 |
22 | 18 | 30 | 16 | 26 | 16 | 16 | 14|
8 | 25 | 22 | 15 | 33 | 17 | 17 | 19 |

2.- Organización de información (tallo y hoja)
5 | 9 – 8 |
10 | 12 – 10 – 12 -14 – 14 – 13 – 12 -14 |
15 | 16 – 18 – 15 – 19 – 17 – 19 –16 – 18 – 18 – 16 – 16 – 16 – 15 – 17 – 17 - 19 |
20 | 24 – 23 – 24 – 21 – 20 – 22 – 22 – 22 |
25 | 28 – 26 – 25 |
30 | 31 – 30 – 33 |

8 – 9 – 10 – 12 – 12 – 12 – 13 – 14 - 14 –14 – 15 – 15 – 16 – 16 – 16 – 16 – 16 |
17 – 17 – 17 – 18 – 18 – 18 – 19 – 19 – 19 – 20 – 21 – 22 – 22 – 22 – 23 – 24- 24 |
25 – 26 – 28 – 30 – 31 – 33 |

3.- Resumen a travésde una distribución de frecuencia
N= 40
Rango= X mayor – X menor = 33 – 8 = 25
K = 1+ 3.32 log 40= 6.31≈ 6
C=RK=256= 4.16≈ 4 ≈ 5

Intervalo de clase | Frecuencia ƒ | Marca declase X | ƒ Acomulada | ƒ relativa porcentual | ƒ relativa acomulada porcentual |
8 – 12 | 6 | 10 | 6 | 15% | 15% |
13 – 17 | 14 | 15 | 20 | 35% | 50% |
18 – 22 | 11| 20 | 31 | 27.5% | 77.5% |
23 – 27 | 5 | 25 | 36 | 12.5% | 90% |
28 – 32 | 3 | 30 | 39 | 7.5% | 97.5% |
33 – 37 | 1 | 35 | 40 | 2.5% | 100% |
| 40 | || | |
Clase modal
Clase mediana

4.- Calculo de medidas de tendencia central


Intervalo de clase | ƒ | Marca de clase | ƒx |
8 – 12 | 6 | 10 | 60 |
13 – 17 |14 | 15 | 210 |
18 – 22 | 11 | 20 | 220 |
23 – 27 | 5 | 25 | 125 |
28 – 32 | 3 | 30 | 90 |
33 – 37 | 1 | 35 | 35 |
| 40 | | ∑= 740 |


M = FxN =74040 = 18.5 ≈ 19.

m= N+12 - F+1Fm C+Lm = (40+12) – (6 +1)14 5 + 13 = 17.82≈18.
Mo = d1d1+d2 C+ Lmo = 88 + 3 5+13= 16.63≈17 .
d1 = 14 – 6 = 8
d2 = 14 – 11=...