GB/T 4891-2008
ActiveChoice of sample size for estimating the average quality of a lot or process
为估计批(或过程)平均质量选择样本量的方法
Application Summary AI generated
This standard provides statistical methods for determining the minimum sample size needed to estimate the average quality of a product lot or production process with a specified level of precision and confidence. It is applied in manufacturing and quality control contexts, such as factory inspections or supplier audits, where random sampling is used to assess whether a batch meets average quality requirements. The standard helps engineers and procurement professionals balance sampling costs against the risk of inaccurate quality estimates.
Related Standards
GB/T 2828.1-2012
Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 19004-2011
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GB/T 19011-2013
Guidelines for auditing management systems
GB/T 19000-2008/ISO 9000:2005
Quality management systems - Fundamentals and vocabulary
GB/T 2828.1-2003
Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
GB/T 19022-2003
Measurement management systems--Requirements for measurement processes and measuring equipment
GB/T 6379.1-2004
Accuracy(trueness and precision)of measurement methods and results--Part 1:General principles and definitions
GB/T 6379.2-2004
Accuracy(trueness and precision)of measurement methods and results--Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
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