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Tablas estadísticas Medidas estadísticas Variable Bidimensional Probabilidad Variable Aleatoria Inferencia estadística Gráficas Gestión de alumnos
 
Statistics

Central Tendency Measures
Geometric Mean
Measures of Location
Measures of Position
Medidas de Forma

Deciles

Deciles are those values of the variable that divide the total frequency into 10 equal parts.
The k-th decile denoted by Dk is computed as follows:

where:

  • L is the lower limit of the class containing Dk
  • f is the frequency of the class containing Dk
  • h is the width of the class containing Dk
  • C is the cumulative frequency of the class preceding the class containing Dk

Here the cumulative frequency just greater than is the class containing Dk (K=1,2,...,9)

Determine D5 from the following distribution

Class
Frequency
Cumulative frequency
0-5
20
20
5-10
15
35
10-15
31
66
15-20
22
88
20-25
10
98
25-30
2
100

Here . The cumulative frequency just greater than 50 is 66, so the class 10-15 contains D5

L=10, f=31, h=5, C=35, Therefore