GB/T 4885-2009Lower confidence limit of reliability for complete sample from normal distribution (English PDF)
正态分布完全样本可靠度置信下限
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 15, 2009
Implementation date
February 1, 2010
Scope
GB/T 4885-2009 is the English-translated version of 正态分布完全样本可靠度置信下限.
GB/T 4885-2009 is the Chinese standard "Lower confidence limit of reliability for complete sample from normal distribution".
Its scope clause reads: This standard specifies the characteristics of the product and the overall value of the population mean variance is unknown, a simple random sample based on product characteristics values given set The confidence level and the attribute value (under) specification limit, lower confidence limit to determine the reliability of the method.
This standard applies to the value of the normal distribution in the case of product characteristics. Its clauses include terms, definitions and symbols.
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Document preview — GB/T 4885-2009
National Standard of the People's Republic of China
- ICS
- 03.120.30
- Classification
- A 41
- Replacing
- GB/T 4885-1985
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols
- 3.1 Terms and definitions
- 3.2 Symbols
- 4 one-sided lower confidence limit of reliability specification limit determined
- 4.1 General
- 4.2 look-up table
- 4.3 Direct Method
- 5 sided lower confidence limit of reliability specification limit determined
- 5.1 Calculation Step
- 5.2 Example
1 Scope
This standard specifies the characteristics of the product and the overall value of the population mean variance is unknown, a simple random sample based on product characteristics values given set
The confidence level and the attribute value (under) specification limit, lower confidence limit to determine the reliability of the method.
This standard applies to the value of the normal distribution in the case of product characteristics.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 2900.13 Electrotechnical terminology credibility and quality of service (GB/T 2900.13-2008, IEC 60050 (191).1990,
Amend. 1.1999AndAmend. 2.2002, IDT)
GB/T 3358.1 Statistics Vocabulary and symbols - Part 1. General statistical terms and terms (GB/T 3358.1- for Probability
2009, ISO 3534-1.2006, IDT)
GB/T 3358.2 Statistics Vocabulary and symbols - Part 2. Applied Statistics (GB/T 3358.2-2009, ISO 3534-2.2006,
IDT)
GB/T 4086.1 Tables for statistical distributions normal
3 Terms, definitions and symbols
3.1 Terms and Definitions
GB/T 2900.13, GB/T 3358.1 and GB/T 3358.2 and established the following terms and definitions apply to this standard. For the convenience of
Reference, certain terms and definitions directly from the above criteria.
3.1.1
It has the following probability density function
Sang sigma 2 pi exp -12
X0 -µ () sigma [] , -infinity < X0 < + infinity
Continuous distribution, where µ is the population mean, sigma is the population standard deviation.
3.1.2
Limit certain characteristics.
3.1.3
It defines the upper limit of the specified limits.
3.1.4
It defines the lower limit of the specified limits.
3.1.5
Only requires the specification limit values of product features, product reliability R refers to the characteristic values of probability does not exceed the specification limit. Only requires that products […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 60 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 4885
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4885-2009 | Lower confidence limit of reliability for complete sample from normal distribution | current edition | Current |
| GB/T 4885-1985 | Lower confidence limit of reliability for complete sample from normal distribution | previous edition | Superseded |
This page sells the current edition, GB/T 4885-2009. Earlier editions are listed for reference only.
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