Distribucion de frecuencias

Distribución de frecuencias.

De las edades de los alumnos de tercer trimestre de la carrera de Licenciatura en Trabajo Social y Desarrollo Comunitario de la Universidad Panamericana, Sede Sololá.Edades: Edades:

Numero de datos= 21

Rango = Dato mayor – Dato menor

R = 45-23 = 22

R= 22

K= amplitud de las clases ointervalos

K = 1 + 3.33 (log n)

K = 1 3.3 +3 (1.32)
K = 1 + 4.39

K = 5.39 K = 5

Punto Medio

PM = Li + Ls / 2

PM = 232 +6 = 49/2 = 24.5
PM = 273 +1 = 58/2 = 29
PM = 323 +5 = 67/2 =33.5
PM = 363 +9 = 75/2 = 37.5
PM = 404 +3 = 83/2 = 41.5
PM = 44 +47 = 91/2 = 45.5

MEDIA

[pic] 636/21 = 30.285
Media = 30.285

Mediana

Lin/2 – fa
Me = _________________ i
f

Me = 27 + 21/2 -5 (4)
______________
8
Me = 27 + 5/8 (4)
Me = 27 + 0.62 (4)
Me =27 + 2.4

Me =

|EDADES |CONTEO |f |(PM) |X.f |fa |
| | | |X | | |
|23-26|||||| |5 |24 |120 |5 |
|27-31 ||||||||| |8 |29 |232 |13 |
|36-39 ||| |2 |37|74 |20 |
|40-43 |0 |0 |41 |0 |20 |
|44-47 || |1 |45 |45 |21 |
|| |21 | |636 | |
| | | | | | |
| | || | | |

-----------------------
Datos desordenados:
25, 35, 31, 23, 29, 33,35,
23, 33, 35, 28, 26, 36,25,
28, 45, 39, 28, 32, 31,27,

Datos ordenados de...