Caso Cristales

  • July 2020
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En la siguiente tabla se muestra el agrupamiento de datos sobre el grosor que tiene un tipo de cristal (en milímetros). Se tomó una muestra de 125 cristales, para ver cuál es la medida de su grosor. Los límites de especificación de los cristales son de 9.8 mm. + 0.5. 9 10.3 9.2 9.8 9.3 9.3 10.4 9.3 9.7 9.3 10 9.4 9.4 10.2 9.4 9.9

INTERVALO

K 1 2 3 4 5 6 7 8

9.5 10.1 9.8 9.9 9.6 9.8 10.1 9.8 9.3 9.9 9.7 9.9 9.7 10 9.9 9.4

LIMITES DE CLASE

LI

LS

9.6 9.9 9.6 10.1 9.8 10.1 10 9.7 10.1 9.7 9.8 10.2 9.9 10 9.7 9.6

9.7 9.8 10.1 10.3 10.1 9.7 9.8 10.1 9.9 10.1 9.9 9.8 10.2 9.9 10.2 9.7

9.8 9.7 9.5 9.7 9.8 9.5 9.8 9.5 10 9.5 10.1 9.7 10 9.8 9.4 10.2

9.9 9.6 9.9 9.6 9.5 10 9.7 10 10.7 9.8 10.7 9.6 9.6 9.4 9.9

10.1 9.5 9.7 9.5 10.3 9.8 9.5 9.8 9.8 10 9.6 10 9.8 9.6 9.7

10.2 9.2 10.3 9.3 10 10.4 9.3 10.6 9.5 10.7 9.3 10.7 10.9 9.7 10.2

MARCA DE CLASE

FRECUENCIA

FREC.. RELATIVA

FREC. ACUM.

FREC. ACUM. %

CALCULO

CALCULO

CALCULO

X

f

h

F

H

fiXi

Xi²

fiXi²

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