GB/T 6378.4-2008
Sampling procedures for inspection by variables.Part4:Procedures for assessment of declared quality levels for mean (English Version)

Standard No.

GB/T 6378.4-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2019-02

Replace By

GB/T 6378.4-2018

Latest

GB/T 6378.4-2018

Replace

GB/T 14900-1994

Scope

This part of GB/T 6378 specifies the sampling inspection procedure for metrology whose quality index is the average value of certain quality characteristics of the verification population. The sampling plan and assessment procedures stipulated in this part of GB/T 6378 are used to assess whether the quality level of a certain population (batch or process, etc.) does not meet a certain claimed quality level. The sampling plan specified in this standard controls the risk of rejecting a qualified population (batch) at 5%. The procedures in this part of GB/T 6378 are not applicable to batch acceptance sampling, but only applicable to various forms of quality inspection, that is, the occasions where the inspection results of samples are used to explain whether a certain inspection population does not meet a certain claimed quality level. The quality characteristics of the inspected product should obey or approximately obey the normal distribution. This part of GB/T 6378 applies to the situation where a random sample consisting of some unit products can be drawn from the verification population. The sampling plan provided in this part of GB/T 6378 can be used (but not limited to) to inspect various products such as: final products; forestry parts and raw materials; operations; work in progress; inventory; maintenance operations; data and records; hypervisor.

GB/T 6378.4-2008 Referenced Document

• GB/T 10111 Generation of random numbers and procedures applied to sampling inspection for product quality*， 2008-07-28 Update
• GB/T 16306 Re-inspection and re-rest procedures for assessment of declared quality levels*， 2008-08-06 Update
• GB/T 4882 Statistical interpretation of data Normality tests
• ISO 3534-1:2006 Statistics - Vocabulary and symbols - Part 1: General statistical terms and terms used in probability
• ISO 3534-2:2006 Statistics - Vocabulary and symbols - Part 2: Applied statistics

GB/T 6378.4-2008 history

• 2018 GB/T 6378.4-2018 Sampling procedures for inspection by variables.Part 4:Procedures for assessment of declared quality levels for mean
• 2008 GB/T 6378.4-2008 Sampling procedures for inspection by variables.Part4:Procedures for assessment of declared quality levels for mean
• 1993 GB/T 14900-1994 Single sampling procedures and tables for product quality audit by variableg for mean value

GB/T 6378.4-2008 Sampling procedures for inspection by variables.Part4:Procedures for assessment of declared quality levels for mean has been changed from GB/T 14900-1994 Single sampling procedures and tables for product quality audit by variableg for mean value.

GB/T 6378.4-2008 -All Parts