NORMSERVIS s.r.o.

ISO 6139:1993

Aluminium ores — Experimental determination of the heterogeneity of distribution of a lot

NORMA vydaná dňa 5.8.1993

Anglicky -
Elektronické PDF (83.80 EUR)
Anglicky -
Tlačené (83.80 EUR)


Francúzsky -
Elektronické PDF (83.80 EUR)
Francúzsky -
Tlačené (83.80 EUR)

Informácie o norme:

Označenie normy: ISO 6139:1993
Dátum vydania normy: 5.8.1993
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO

Anotácia textu normy ISO 6139:1993 :

Description / Abstract: The heterogeneity of distribution is characterized by the distribution variance and is determined by experimentally measuring the sampling variance. Because both the composition variance and distribution variance contribute to the measured sampling variance, it is necessary to separate these two components. Two methods of data analysis are permitted: Vismans theory of sampling which uses classical statistics and the variogram method which gives a better estimate because of taking into account serial correlation between adjacent increments.