Estadistica

MURO DE LADRILLO ACABADO COMUN
Tabla de 30 datos con respecto a números aleatorios
2 | 12 |
3 | 12 |
5 | 12 |
6 | 12 |
7 | 12 |
8 | 13 |
8 | 13 |
8 | 14 |
9 | 15 |
9 | 15 |10 | 15 |
10 | 15 |
10 | 20 |
10 | 20 |
10 | 20 |

Tabla de distribución de frecuencias
K=√tamaño dela muestra | R= obs mayor- obs menor | C= (R+1)/K |
K= √30 | R= 20 - 2 | C=(18+1)/5 |5.477225575 | 18 | 3.8 |
k=5 | R=18 | 4 |

K | INTERVALOS | L. R | FRECUENCIA | F. A | X' | F.R | F*X' | (1/X')(F) | Log X`*F |
1 | 2,5 | 1.5 - 5.5 | 3 | 3 | 3.5 | 10 | 10.5 | 0.8571 |1.6322 |
2 | 6,9 | 5.5 - 9.5 | 7 | 10 | 7.5 | 23.33 | 52.5 | 0.9333 | 6.1254 |
3 | 10,13 | 9.5- 13.5 | 12 | 22 | 11.5 | 40 | 138 | 1.0434 | 12.7283 |
4 | 14,17 | 13.5 - 17.5 | 5 | 27 | 15.5 |16.66 | 77.5 | 0.3225 | 5.9516 |
5 | 18,21 | 17.5 - 21.5 | 3 | 30 | 19.5 | 10 | 58.5 | 0.1538 | 3.8701 |
| | | 30 | | | 99.99 | 337 | 3.3101 | 30.3076 |

Graficas :

Medidas de tendenciacentral:
* Media simple
* Media aritmética
* Media armonica
* Media geométrica
* Mediana
* Moda
Media simple = (obs. Mayor- obs. Menor)/2
=(20-2)/2 = 9
Media aritmética = (F*X')/F
= 337/30 = 11.233
Media armónica = F/(1/X')(F)
= 30/3.3101 = 9.0631

Media geométrica = Log G= (Log X`*F)/F
= Log G =30.3076/30
= Log G =1.0101
G = 10.23
Mediana = (10+12)/2
= 11
Moda = 11.5
Medidas de variación o dispersión:
* Rango
* Desviación media
* Varianza* Desviación estándar
Rango = Obs. Mayor - Obs. Menor
= 20-2 = 18
Desviación media = (∑ I Xi-XaI*Fi)/∑Fi
(Xi-Xa)(Fi) |
23.199 |
26.131 |
3.204 |
21.335 |
24.801 |98.67 |

= 98.67/30 = 3.289

Varianza = S²= (∑(Xi-Xa) ²*Fi)/n-1
(Xi-Xa)² * F |
179.3978 |
97.547 |
0.8554 |
91.0364 |
205.0298 |
∑=573.8664 |...