Nelson rules

Rule 1

One point is more than 3 standard deviations from the mean.

Rule 2

Nine (or more) points in a row are on the same side of the mean.

Rule 3

Six (or more) points in a row are continually increasing (or decreasing).

Rule 4

Fourteen (or more) points in a row alternate in direction, increasing then decreasing.

Rule 5

Two (or three) out of three points in a row are more than 2 standard deviations from the mean in the same direction.

Rule 6

Four (or five) out of five points in a row are more than 1 standard deviation from the mean in the same direction.

Rule 7

Fifteen points in a row are all within 1 standard deviation of the mean on either side of the mean.

Rule 8

Eight points in a row exist with none within 1 standard deviation of the mean and the points are in both directions from the mean.

la empacadora de carnes frías toros y letrillas elaboro empaques de una libra "454" con una tolerancia de 6gr se toma una muestra de 250 piezas encontrándose un peso máximo de 460g y mínimo de 452g las frecuencias de las que categorías  fueron; 13,19,24,30,47,36,23,18 elabora un análisis estadístico para determinar el desempeño del proceso

histograma

la inge. marcelina debe seleccionar un probador de anillos para pistones que utiliza en la fabrica de sistemas hidráulicos. elijemos este probador de acuerdo con los dato y especificaciones de el cliente

2

histograma

histograma

DATOS:
max: 11.315
min: 10986
N° intervalos 11
rango: 0.329