Ejercicios De Estadistica

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yMEDIDAS DE VARIABILIDAD O DISPERSIÓN
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PARA DATOS ORDENADOS
32,30,29,29,28,28,28,27,27,27,27,26,26, 25,24
DATOS X | FRECUENCIAf | | X - Ẋ | | | X - Ẋ | f | | X - Ẋ |2 | | X - Ẋ |2 f |
24 | 1 | 3.53 | 3.53 | 12.46 | 12.46 |
25 | 1 | 2.53 | 2.53 | 6.40 | 6.40 |26 | 2 | 1.53 | 3.06 | 2.34 | 4.68 |
27 | 4 | 0.53 | 2.12 | 0.28 | 1.12 |
28 | 3 | 0.47 | 1.41 | 0.22 | 0.66 |
29 | 2 | 1.47 | 2.94 | 2.16 | 4.32 |
30 | 1 | 2.47 | 2.47 | 6.10 | 6.10 |
32| 1 | 4.47 | 4.47 | 19.98 | 19.98 |
Σ f = 15 Σ | X - Ẋ | f = 22.53 Σ | X - Ẋ |2 f = 55.72Σ X 413
MEDIA Ẋ = ----------------- = ----------------- = 27.53Σ f 15
Σ | X - Ẋ | f 22.53DESVIACIÓN MEDIA DM = --------------------------- = --------------- = 1.50
Σ f15
Σ | X - Ẋ |2 f 55.72
VARIANZA VAR =---------------------------- = ------------------- = 3.71
Σ f 15DESVIACIÓN ESTÁNDAR DS = √ VAR = √3.71 = 1.92



MEDIDAS DE VARIABILIDAD O DISPERSIÓN
PARA DATOS ORDENADOS
2,2,2,3,3,4,4,4,4,4,5,5,6,6,6,7

DATOS X |...