This part of GB/T 6378 specifies the acceptance sampling system for the measurement of the single sampling plan. The acceptability of the batch in this part is essentially determined by the percentage of process nonconforming products (estimated by samples randomly selected from batches in the process). This part of GB/T 6378 is only applicable to single quality characteristics that can be measured by continuous scale. The sampling inspection procedures in this part are not applicable to batches that have been screened for nonconforming products in advance. GB/T 6378.2 gives a more extensive technical treatment. This part of GB/T 6378 is a supplement to GB/T 2828.1. The purpose of the method given in this part of GB/T 6378 is to ensure that batches with actual quality levels better than the acceptance quality limit are accepted with a high probability, and to ensure that batches with actual quality levels worse than the acceptance quality limit are accepted with a low probability. This part of GB/T 6378 replaces GB/T 6378-2003 "Measurement sampling inspection procedures and charts for nonconforming product rate (applicable to the inspection of continuous batches)". The main differences between this part and GB/T 6378-2003 are as follows: --- The terminology related to nonconformity classification has been cancelled. --- The implementation procedure has been cancelled. --- AQL is the abbreviation of acceptance quality limit, which reflects its role more accurately than the acceptable quality level used in GB/T 6378-2003. --- This part of GB/T 6378 is applicable to the sampling inspection of a single quality characteristic that follows a normal distribution. This part of GB/T 6378 also includes the case of combined two-sided specification limits, while the content related to separate and composite two-sided specification limits will be dealt with in GB/T 6378.2. More general procedures for multiple quality characteristics and/or multiple AQLs will be given in GB/T 6378.2. — The sampling plan of this part of GB/T 6378 has been revised to make it more compatible with the sampling plan of GB/T 2828.1 on the operating characteristic curve. The sample size for both the s method and the σ method is constant in the rows of the main table. — All acceptance constants (see Annex B, Annex C, Annex G and Annex I) have been revised to three decimal places in the corresponding AQL. — All table values ​​of the operating characteristic have been recalculated, and the relaxed test has been directly calculated as well as the normal and tightened tests. — The appendix containing general statistical theory has been cancelled. It is planned to place its content in the Guidelines for Variable Sampling Test Procedures. — The tables required for implementing the procedures have been rearranged in the appendix. GB/T 6378.1-2008 Sampling inspection procedures for measurement Part 1: Single sampling plan for batch inspection of single quality characteristics and single AQL indexed by acceptance quality limit (AQL) GB/T6378.1-2008 standard download decompression password: www.bzxz.net
This part of GB/T 6378 specifies the acceptance sampling system for single sampling plans for measurement. The acceptability of the batch in this part is essentially determined by the percentage of nonconforming products in the process (estimated from samples randomly selected from batches in the process). The sampling inspection procedures in this part are not applicable to batches that have been screened for nonconforming products in advance.
GB/T 6378 "Sampling procedures for measurement" will be divided into the following parts. Its expected structure and corresponding international standards and national standards to be replaced are:
--- Part 1: Primary sampling plan for batch inspection of single quality characteristics and single AQL indexed by acceptance quality limit (AQL) (ISO3951-1:2005, IDT; replaces GB/T 6378-2003)
--- Part 2: Primary sampling plan for batch inspection of independent quality characteristics indexed by acceptance quality limit (AQL) (corresponding to ISO3951-2:2006)
--- Part 3: Secondary sampling plan for batch inspection indexed by acceptance quality limit (AQL) (ISO3951-3:2007)
--- Part 4: Procedure for assessment of claimed quality level of mean (ISO/WD 3951-4:2007, NEQ; replaces GB/T14900-1994)
--- Part 5: Sequential sampling plan for metrological inspection indexed by acceptance quality limit (AQL) (corresponding to ISO/FDIS395105:2005)
This part of GB/T6378 is equivalent to the international standard ISO3951-1:2005 "Metric sampling inspection procedures Part 1: Provisions for a single sampling plan for batch inspection of a single quality characteristic and a single AQL indexed by acceptance quality limit (AQL)". This part
of GB/T6378 replaces GB/T6378-2003 "Metric sampling inspection procedures and charts for nonconforming product rate (applicable to inspection of consecutive batches)". The main differences between this part and GB/T6378-2003 are as follows:
--- The terms related to nonconforming classification are cancelled.
---The implementation procedure has been cancelled.
---AQL is the abbreviation of Acceptance Quality Limit, which more accurately reflects its role than the Acceptable Quality Level used in GB/T 6378-2003.
---This part of GB/T 6378 is applicable to the sampling inspection of single quality characteristics that obey the normal distribution. This part of GB/T 6378 also includes the case of combined two-sided specification limits, while the content related to discrete and composite two-sided specification limits will be dealt with in GB/T 6378.2. More general procedures for multiple quality characteristics and/or multiple AQLs will be given in GB/T 6378.2.
---The sampling plan of this part of GB/T 6378 has been revised to make it more compatible with the sampling plan of GB/T 2828.1 on the operating characteristic curve. The sample size for both the s method and the σ method is constant in the row of the main table.
---All acceptance constants (see Appendix B, Appendix C, Appendix G and Appendix I) are corrected and listed with 3 decimal places in the corresponding AQL.
---All table values ​​of operating characteristics are recalculated, and relaxed inspection is directly calculated as normal and tightened inspection.
---The appendix containing general statistical theory is cancelled. It is planned to put its content in the guidelines for variable sampling inspection procedures.
---The tables required for implementing the procedures are rearranged in the appendix.
Appendices A to N of this part are normative appendices.
This part is proposed and managed by the National Technical Committee for Standardization of Statistical Methods.
Drafting units of this part: Ordnance Engineering College of the Chinese People's Liberation Army, China National Institute of Standardization, Institute of Mathematics and Systems Science of the Chinese Academy of Sciences, Soochow University, Fuzhou Chunlun Tea Co., Ltd.
The main drafters of this part are Zhang Yuzhu, Yu Zhenfan, Ding Wenxing, Chen Min, Feng Shiyong, Wang Renguan and Fu Tianlong. The
previous versions of the standards replaced by this part are:
---GB/T6378-1986;
---GB/T6378-2003.
The clauses in the following documents become the clauses of this part through reference in this part of GB/T6378. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, the parties to the agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this part.
GB/T 2828.1-2003 Sampling procedures for inspection by attributes Part 1: Sampling plans for batch inspection indexed by acceptance quality limit (AQL) (ISO 2859-1: 1999, IDT)
ISO 3534-1: 2006 Statistical vocabulary and symbols Part 1: General statistical terms and terms used in probability theory
ISO 3534-2: 2006 Statistical vocabulary and symbols Part 2: Applied statistics
Foreword III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Symbols 4
5 Acceptance quality limit (AQL) 5
5.1 Principle 5
5.2 Purpose 5
5.3 Definition of AQL value 5
5.4 Preferred AQL value 5
5.5 Note 5
5.6 Limitation 5
6 Transfer rules for normal, tightened and relaxed inspection 5
7 Relationship with GB/T 2828.1 6
7.1 Similarities 6
7.2 Differences 6
8 Limit quality protection 6
8.1 Use of a single plan 6
8.2 User risk table 7
8.3 Producer risk table 7
8.4 Operating characteristic curve 7
9 Planning 7
10 Choice between measurement and counting 7
11 Choice between s method and σ method 8
12 Selection of the Inspection Level and AQL8
13 Selection of the Sampling Plan8
13.1 Standard Plan8
13.2 Special Plan9
14 Preparatory Operations9
15 Standard Procedure for the σ Method9
15.1 Search Plan, Sampling, and Preparatory Calculations9
15.2 Acceptance Criteria for One-Sided Specification Limits9
15.3 Graphical Method for One-Sided Specification Limits10
15.4 Acceptance Criteria for Combined Two-Sided Specification Limit Tests11
16 Standard Procedure for the σ Method15
16.1 Search Plan, Sampling, and Preparatory Calculations15
16.2 Acceptance Criteria for One-Sided Specification Limits15
16.3 Acceptance Criteria for Joint Two-Sided Specification Limits16
17 Procedure for Continuous Inspection17
18 Normality and Outliers17 ||tt || 18.1
Normality17
18.2 Outliers17 ||tt ||
19 Records17
19.1 Control Charts17 || tt||
19.2 Rejected Lots17
20 Implementation of Transfer Rules17
21 Suspending and Resuming Inspection18
22 Switching Between the S- and σ-Methods18
22.1 Estimation of the Process Standard Deviation18
22.2 State of Statistical Control18
22.3 Switching from the S-Method to the σ-Method18
22.4 Transition from the σ method to the s method 18
23 Figure A --- Sample size code for standard single sampling plan and specified quality level 18
24 Figures B to R (Figures 5 to 19) --- Operating characteristic curves and tables for sample size code B to R, s method 20
25 Figures sD to sR (Figures 20 to 32) --- Acceptance curves for combined two-sided specification limits, s method 35
Appendix A (Normative Appendix) Tables for determining sample size 48
Appendix B (Normative Appendix) Acceptance constant k for single sampling plan using the s method 50
Appendix C (Normative Appendix) Acceptance constant k for single sampling plan using the σ method 53
Appendix D (Normative Appendix)
Appendix E (Normative Appendix) Value of coefficient fs in maximum sample standard deviation (MSSD) 56 Appendix E (Normative Appendix) Value of coefficient fσ in maximum sample standard deviation (MPSD) 59
Appendix F (Normative Appendix) Estimation of process nonconforming rate with sample size 3, s method 60
Appendix G (Normative Appendix) P of single sampling plan 64
Appendix H (Normative Appendix) Value of coefficient cU in upper control limit of sample standard deviation 65
Appendix I (Normative Appendix) Additional acceptance constant in relaxed inspection qualification 66
Appendix J (Normative Appendix) Procedure for calculating s and σ 67
Appendix K (Normative Appendix) User risk quality 69
Appendix L (Normative Appendix) Producer risk 73
Appendix M (Normative Appendix) σ Operating characteristics of the method 77
Appendix N (Normative Appendix) Estimation of the rate of defective products in processes with sample sizes of 3 and 4, S method 78
References 80

ICS 03. 120. 30
People's Bank of China and national standards
GB/T 6378.1—2008/1S0 3951-1:2005 replaces (G3/15378—2002
Sampling procedures for inspection hy yariables-Part 1:Specification for single sampling plans indexed by acceptance quality limit (AQl) for lat-hy-imf imspeetian fort single ualily caractcristic ad a single AQr(ISO 3951 1 : 2005, IDT)
2008-07-28
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
National Standardization Administration
2009-01-01
National Standard
Metrological sampling inspection procedures Part 1: Single sampling plan for batch inspection of single quality characteristics and single AQL indexed by acceptance quality limit (AQI) GB/T 6276.:238/IS0 3941 1.2065 Xiaowei Standard Press Published and distributed
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http://foodmate.net Preface
Normative references
Terms and definitions
Acceptance quality limit (AQL)
Provisions for AQ. values
Priority AQL values
Normal, strict and Relationship between the transfer rules of relaxed inspection and GB/T2828.1
Cap penetration point
Unlayer point
Limit spray protection
Use of a single plan
Risk table for user
Risk table for dust producer
8.4 Operating characteristic line
9 Construction plan
Choice between measurement and counting
Choice between methods
Choice of inspection level and AQI.
13 Choice of pumping plan
13.1 Standard plan| |tt||13.2 Special schemeswww.bzxz.net
14 Preparatory operations:
15 Standard procedure for method 15
15.1 Search scheme, sampling and preliminary calculations15.2 Acceptance criteria for single-side specification limits
15.3 Graphic method for single-measurement specification limits
15.1 Acceptance criteria for combined double-measurement specification limit inspection
16 Standard procedure for method 16
16.1 Search scheme, sampling and preliminary calculations16.2
Acceptance criteria for single-measurement specification limits
GB/T 6378.1-2008/SO3951-1:200515
GH/T 6378.1—2008/'S0 3951-1:200516.3 Acceptance criteria for combined two-sided specification limits 17 Procedure for continuous inspection
18 Normality and outliers
Proof of normality
Outliers
19 Recording
19.2 Unacceptable batches
20 Implementation of transfer rules
Suspension and resumption of inspection
22 Secretion and. 22.1 Evaluation of process standards 22.2 Qualified status 22.3 From method A to method C 22.4 From method A to method C 23 Figure A Standard single-batch sample sample does not conform to the specified quality level 2% Table 13 to Figure R, to Figure 10) - 25 Figure R (Figures 20 to 32) Appendix A (Normative Appendix)
Appendix 3 (Normative Appendix)
Appendix ((Normative Appendix)
Appendix (Normative Appendix)
Appendix E (Normative Appendix)
Appendix F (Normative Appendix)
Appendix ((Normative Appendix)
Appendix H (Normative Appendix)
Appendix 1 (Normative Appendix)
Appendix K (Normative Appendix)
Exclusion L (normative record)
Record M (regulatory appendix)
Appendix (both normative appendix)
References
Sample code to R operation compliance output diagram and table, method - joint double measurement standard limit acceptance mountain line method
Detailed table of this quantity
"The method's second state sample is the kernel constant of the observation
The method's first-time acceptance constant of the most common sample standard deviation (MSSD) is used to calculate the coefficient of the maximum sample standard deviation ( MPSD) coefficient value details of the method for estimating the process defective rate of 3 samples in the sampling method of the upper control limit of the sample standard deviation coefficient %: the value of the acceptance constant calculation and α in the inspection and evaluation of the risk quality of the production method x risk. The method of using the characteristics of the method of estimating the process defective rate of 3 samples in the sampling method of the upper control limit of the sample standard deviation coefficient %: the value of the acceptance constant calculation and α in the inspection and evaluation of the risk quality of the production method x risk. The method of estimating the process defective rate of 3 samples in the sampling method of the upper control limit of the sample standard deviation coefficient %: the value of the acceptance constant calculation and α in the inspection and evaluation of the risk quality of the production method x risk. 3951-1:2005G13/637 Metrological sampling inspection will be divided into the following parts in order, its periodic structure and the corresponding international standards and national standards to be replaced are:
--Part 1: According to the quality limit (AQ.) search for single, quality characteristics using a single AQI. Batch inspection of the sampling column (ISO3951-12005D: replaces GB/T63?8--2003-Part? ... Secondary sampling plan for independent quality inspection of batches tested at acceptance quality limit (AQ1) (corresponding to [S(3951-2:2006)
-Part 3: Secondary sampling plan for batch inspection tested at acceptance quality limit (AQ1) (1S0) 391-3:2007) Part 4: Procedure for assessment of the claimed quality of the mean value (IS0/WI) 3951-4:2007, NFQ; corresponding to GB/T :4900.--1994)
-Part 5: Metrological inspection sampling by acceptance quality limit (AQ1.) (corresponding to IS0/11839515:2005) This part of CB/T6378 is equivalent to ISO1503S51:2005 "Metric sampling inspection - Part 1: Provisions for single-batch inspection of quality characteristics and single AQ1.) by acceptance quality limit (AQI.)". This part of GB/T:5373 replaces GB/T6378.-2003 "Metric sampling inspection procedures and charts for determining the rate of non-conforming products (applicable to inspection of subsequent batches)". The main differences between this part and (GB/T 63782CC3) are as follows: - The technical basis for nonconformity classification has been cancelled. The implementation procedure has been cancelled.
- AQI is the abbreviation of acceptance quality limit (AcceptanceQualityLimit), which can accurately reflect the effect of film than the acceptable quality level (AcceptableQualityLevel) used in GB/T 637S2003. This part of GB/T 6378 is applicable to the detailed inspection of a quality characteristic of the normal distribution section. (GB/T 6378 This part also includes the case of combining double-sided specification limits. The content related to separate and composite double-measurement specification limits will be dealt with in (GB/T 6378.2). More general procedures using more than ten quality characteristics and/or more than one AQ1. will be discussed in (GB/T 6378.2. The sampling scheme of GB/T6378 has been revised to match the sampling scheme of GB/T2828. The sample sizes of the three methods of elimination and elimination are constants in the above table. The acceptance constants of one person (see Appendix B, Appendix C, Appendix (, and Appendix 1) have been revised to 3 decimal places and are listed in the corresponding AQ.rh.
All conditions of the operating characteristics have been recalculated, such as normal and tightened inspection samples. The inspection has also been carried out again. The "section has been eliminated: the general statistical theory of the appendix is ​​planned to be included in the detailed inspection of metrological data. In the planning of the procedure. The forms required for executing the procedure are newly arranged in the appendix. Appendices A to V of this part are all normative appendices: this part is composed of the statistical method and standardization technology. Drafting units of this part: People's Liberation Army Ordnance Engineering College, Ningbo Institute of Standardization and Technology, Institute of Mathematics and Systems Science of the Chinese Academy of Sciences, Soochow University, Fuzhou Gulun Tea Co., Ltd., and other main drafters: Zhang Tianzhu, Yu Zhenfan, Ding Wenxing, Jin Min, Feng Tuji, Wang Renxin, Pian Tianlong. The versions of the standards replaced by this part are: -G13/T 6378—1986:
CB/T63782003.
G/T6378.1—2008/ISO3951-1:2005 Introduction
G[3/T6378 specifies the sampling system for the metrological-batch inspection plan, which is indexed by the acceptance quality limit (AQI.). (/16378.2 gives a more general technical treatment. This part of GB/T6378 is a supplement to G3/T2828.1. The method given in this part of B/T5378 is The purpose of the method is to ensure that the actual quality level is better than the acceptance quality limit of the batch with a high probability of acceptance, and at the same time to ensure that the actual quality level is lower than the acceptance quality limit of the batch with a guaranteed rate of acceptance. The above-mentioned methods are as follows: a) When the quality is found to be poor, it can be transferred to strict inspection or temporarily inspected to provide protection for the user; b) If the quality is good, it can be transferred to the smallest sample to reduce the inspection cost to motivate the manufacturer. The essence of the acceptability mentioned in Part 1 of GB/TG378 is that the process is not qualified. The score (estimated from random samples of each batch in the process.
GH/6373 The inspection procedures in this part apply to consecutive series of batches of discrete products, that is, products from all production processes of the same type. If the products come from different production methods and different production processes, they should be used separately (B/T6378 This part (not part B/T6378) is applicable to consecutive series of single quality batches: for two or more quality characteristics, the most important thing is to use G3/T6378.2.
CB/T6378 This part assumes that the measurement errors are negligible. When measurement errors need to be considered, see reference [17. This part of GB/T6978 only deals with joint two-sided limits, and only the standard limits in the form of GB/T6278.2. This standard uses the number of qualified products as the most accurate quality indicator. The following are several modes of quality inspection: the possible combinations are relatively confusing to the user:
standard deviation is unknown, or it can be estimated with considerable accuracy before and after the initial test, or it is known at the beginning of the test; - single measurement specification limit or joint two-sided specification limit: normal test, severe test or effective test. This part of GI/F6378 contains 14 appendices. Appendix A to Appendix 1 give the tables required for different batch procedures. Appendix K provides the statistical theory for calculating the user's risk and lists the corresponding risk values ​​of the normal tightening and modified inspection methods and the process standard deviation. Appendix M gives the general formula for the operating characteristics of the method. The appendix specifically gives the statistical theory for estimating the process failure rate when the sample quantities are and, because the technical treatments in these two cases are different from the cases with the corresponding quantities. In order to reduce the application of this part of G/T 6378, Table 1 provides guidance for the user on the corresponding contents and diagrams of this part that need to be used in different possible situations. Although Table 1 is related to the contents of Chapters 15, 16, 20, 21 and 2, no matter which situation, other related clauses must be read first.
G/T 6378.1--2008/1SO 3951-1:20052
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G#/6378.1--2008/0 3951-1:2005 Procedure for inspection by sampling - Part 1: Single sampling method for batch inspection of single quality characteristics and single A by acceptance quality limits This part of G13/T378 specifies the acceptance system for the sampling plan. The acceptability in this part is essentially determined by the fraction of nonconforming products in the process (estimated from the process batch inspection process). The selection order of batch inspection in this part is also determined by the selection of nonconforming products. This part is mainly for the following purposes: This part The inspection steps of the three production processes are all based on the individual product series batches, that is, all products are strictly controlled... "Three production processes:
only consider the single quantity
measurement of the product, that is, the above
small product has not passed the Wei Stability Test (the second standard
if the quality characteristics are not met in the same standard
the following warning value U
the first) is called a single
if the product does not meet the range limit, this department
compares the double measurement specification limit with the individual 2 normative references group
lower Wei standard limit station
when the product
upper standard limit);
town engineering branch
carry a tough standard limit good product film
quality product door score
upper state distribution Dai nearly flag obeys positive distribution;
determine "when the product is tested
standard limit.
electric limit.
sealed news and other important in the soul regret transfer should use super
just determine the mouse please "complex control"
The old version of the following document is the referenced document of the date of reference. All subsequent versions (including new and incorrect contents) are not applicable to this document. However, the parties to this agreement will study whether the latest versions of these documents are applicable. The latest versions of the referenced documents are applicable to the following part: GB/T2828.1--2C03 Inspection procedures for acceptance of quality assurance Part 1: Inspection sampling plan for acceptance of quality assurance (IS0 ISO 3534-1:2006 Statistical vocabulary - Part 1: General statistical terminology - Terms used in regularization theory ISO 3534-2:2006 Statistical terms and symbols - Part 2: General statistical terms and definitions ISO 3534-1:2006 Statistical vocabulary - Part 2: General statistical terms and definitions The terms and definitions established in ISO 3534-2:2006 and ISO 3534-3:2003 and the following technical definitions apply to this part.
Metrological inspectioninspectionbsyariaileeInspection conducted by measuring the quality characteristics of unit products, 11ISO 9534-2:2006.4. 1.4
ht
GB/T6378.1--2008/ISO3951-1:20053.2
Sampling inspectionsamplinginspeeion
Take a unit product from the product set under examination for inspection. 1ISO3534-2.2006,4.1.67
acceptance sampling inspection;acceptance sampling inspection (3.2) acceptance inspection to determine whether the product can be accepted, [10 3534 2:200f,4.1.8!
aeceptance sampling inspection by variable measurement acceptance sampling inspection
acceptance sampling inspection to determine the acceptability of the process statistically based on the expected values ​​of the specified quality characteristics of each unit product in the sample of the batch (3.3).
[10 3534 2:2006,4.2. [1]
process average defective ratePracessfractiunonafauruningThe ratio of nonconforming products produced by a process expressed as a proportion, 3.6
Acceptance quality limit (AQ) The worst average nonconforming product rate (3.5) that can be tolerated when accepting consecutive batches (3.3) See section 1.
Quality level
Quality expressed as a percentage of nonconforming products.
Limiting quality limiting anality
When accepting consecutive batches for sampling (3.3), the quality level (3.7) that must be limited to the lowest acceptance rate must be considered, 1ISO 3F34-2:2006, 4.6.13]
Note 1: In wood parts, the probability of acceptance is limited to 10%. Note 2 See section 1.
nonconformity
nonconformity
failure to meet specified requirements.
nonconforming unit product noacmfaormingunit has one or more nonconforming units, 3. 11
s nicthand acceptance sampling plans
Metrological acceptance sampling plans using sample standard deviation], LISO 3534-2.2006, 4.3.10]
Note: See Chapter 5.
Metrological acceptance sampling plans metlox&ccepancesamplingplat acceptance sampling plans using assumed value of process standard deviation. 150) 334-2:2006, 4. 3. 9-
Note: See Chapter 15
Compliance product partner network
Specification limit
Acceptable limit value specified for a quality characteristic. [IS0 3534-2: 2006, 3.1.3
lower specification limit lawer specification limit is the specification limit of the lower limit of the compliance specified for a unit product or service (3.13), [IS0 3534-2:2006.3.1.E7]
upper specification limit is the specification limit of the upper limit of the compliance specified for a unit product or service (3.13). LISO3534.2:2006,3.1.4]
Combined control cominielcotroi
TB/T6378.1-2008/S03951-1:2005 When upper and lower specification limits are specified for quality characteristics, the combined percentage of nonconforming products outside either of the two specification limits shall be taken as the AQL(3.6)
Note 2: 5. 3.
Note 2: Combined control means that the effects of nonconforming products exceeding one specification limit on product integrity are the same or approximately the same. 3.17
Acceptance constant acceptance constant
The number of samples used in the batch acceptance criteria in the metrological acceptance program that depends on the current acceptance quality limit (3.6) and the number of samples recorded.-130 2534-2, 2006, 4.4.4
Note: See 5.2 of this chapter 10.2,
The quality statistic gualityaiisti
The number of sample means and sample (or overstable) standard deviations used to assess the acceptability of the batch NOTE 1: For the one-sided specification limits (3.13), the acceptance limit of the batch is determined by comparison with the acceptance constant (3.17) of the quality control sample. [IS0 3534 2.2006, 4.4, 9]
Note 2: 15.2 and 6.2.
the lower quality statistic lowerfjualitystatistie is a function of the lower specification limit (3.14), the sample mean, and the sample (or process) standard deviation. NOTE 1: For a one-sided lower specification limit (3.14), the acceptability of the batch is determined by comparing (2.) with the acceptance constant (3.17). _IS0 3532-2, 2006.1.4. 31
NOTE 2: See Chapter 4, 15. 2 and 16, 2, 3.20
upperqualitystatisticio
upperqualitystatistic
function of the upper specification limit (3.14), the sample mean and the standard deviation of the sample (or process). NOTE 1: For a one-sided upper specification limit (3.15), the acceptability of the batch is determined by comparing the upperqualitystatistic (2.) with the acceptance constant (3.17). [IS0 $534-2:2C86, 4. 4, 10
NOTE 2: No Chapter 4, 15. 2 and 16, 2 3
h
GB/T 6378.1—2008/ISO 3951-1:20053.21
Maximum sample standard deviation
as sap sanad de
When the process variation is not determined, for a given group quantity code and acceptance quality limit (3.6), the maximum sample standard deviation that can meet the joint two-sided specification limit acceptance criterion.
Note: Now 15.4.
maximm process siandarddeviatien maximum process standard deviation
When the process variation is known, for a given sample size and acceptance quality limits (3.6), the largest excess standard deviation that can meet the two-sided specification limits (3.13) under the tightened inspection condition. Note: [5.3]
Transfer rule witch exceeds k
In the acceptance sampling plan, the root cause of the sample force is the instruction rule
Note 1: See Chapter 20
Quality of Condensation|| |tt||Note 2: Normal, tightened or numerical inspection, or age 3.24
mearre
determine the set of
4 symbols
determine the sample standard deviation 1 control limit
the maximum population standard deviation and UL
the maximum over
use in tightened inspection, method and previous expert opinion. Method clause
lower specification limit (weak adjustment of the
lower
process average
batch (unit production quantity in batch)
Sample size (number of units in the sample)
Estimated value of the process nonconforming rate
Quality factor (
Estimated value of the process nonconforming rate below the lower specification limit)
The maximum acceptance value of the process nonconforming rate
Quality statistics
A quality statistic
The probability of changing the process nonconforming rate is 29
Electrode adhesion
Note: When the process standard deviation is unknown, + is defined as r-)/5; when the standard quantity is known, it is defined as (-L)/, the quality statistical product
method 2: When the process standard deviation is unknown, Q is defined as (--)/: When the process label is known, : is defined as (:)/, the sample standard deviation of the quality characteristic measurement value (also represents the estimate of the process standard deviation) http://www.statisticalstandarddeviation.com/MSSD
The standard deviation of the process under statistical control
Note 3: The square of the standard deviation is generally called the process square. Maximum Process Standard Deviation (MPSID) Upper Specification Limit (Upper Specification Limit when used as a subscript for a variable) The arithmetic mean of the maximum value of a characteristic measured by a sample of quality control personnel for each unit of output quality. 5 Acceptance Quality Limit (QL) 5.1 Principle When accepting consecutive batches of quality products, the acceptance rate should be determined and the number of qualified products should be indicated. In the event of a problem, the quality limit should be set and the supplier should be encouraged to move to a more stringent inspection and take measures to improve the process. 5. 2 Purpose In this section and sample package 5.3 AQL value provisions AQI product standard contract General AQL installation specification time limit "separate and combined quantity (G1/5.4 Priority AOL cut-off unqualified products will be steamed to determine the quality of the product. For example, the total product white score CP/:6378.1-2008/180 3951-1:2005 The worst process quality level·The unqualified products in Sichuan are described in detail in batches with a very high rate. This part provides a sample design plan, which can be transferred to the corresponding eight Qs: Otherwise: it is very likely to be transferred. It is very demanding!
Sample inspection:
Follow strict inspection, except for the positive supplier
then the color is the next period of specification, otherwise the part is only one steel "joint light manufacturer about the double-sided specification limit AQL with them according to the priority number system design. This section gives the milk (%) of the mountain. The AQ of the inspection station or service is not included in the above-sent excellent light value, then the clothing can be supplied to this department (see 13.2). 5.5 Note
The above-mentioned AQI is only for the protection of the inspection regulations of the continuous series of batches. 5.6 Limits
The AQL you set does not mean that the party has the right to make any known inedible decisions. 6 Normal, The rule of transfer from stricter to more relaxed inspection is to prevent the quality level of the production party from falling below the AQL. In this part, when the inspection results show that the quality is lower than the AQL, it is transferred to strict inspection. If the strict inspection fails to motivate the production party to improve its production process quickly, this part also stipulates the suspension of sample inspection. In order to control the quality level of the process below the AQL: This part tightens the inspection and suspends the inspection. The parts must be used as a whole. When the inspection results show that the quality level is stable and lower than A, this part also stipulates the rule of "transferring to relaxed inspection". However, the implementation of this rule is optional (decision made by the responsible party).
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