ImageVerifierCode 换一换
格式:PDF , 页数:7 ,大小:120.04KB ,
资源ID:185555      下载积分:8 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。 如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【https://www.wnwk.com/docdown/185555.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: QQ登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM_C_970_-_87_2006.pdf)为本站会员(益****师)主动上传,蜗牛文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知蜗牛文库(发送邮件至admin@wnwk.com或直接QQ联系客服),我们立即给予删除!

ASTM_C_970_-_87_2006.pdf

1、Designation:C 970 87(Reapproved 2006)Standard Practice forSampling Special Nuclear Materials in Multi-ContainerLots1This standard is issued under the fixed designation C 970;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of

2、 last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice provides an aid in designing a samplingand analysis plan for the purpose of minimizing random errorin the m

3、easurement of the amount of nuclear material in a lotconsisting of several containers.The problem addressed is theselection of the number of containers to be sampled,thenumber of samples to be taken from each sampled container,and the number of aliquot analyses to be performed on eachsample.1.2 This

4、 practice provides examples for application as wellas the necessary development for understanding the statisticsinvolved.The uniqueness of most situations does not allowpresentation of step-by-step procedures for designing samplingplans.It is recommended that a statistician experienced inmaterials s

5、ampling be consulted when developing such plans.1.3 The values stated in SI units are to be regarded as thestandard.1.4 This standard does not purport to address all of thesafety problems,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate sa

6、fety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E 300 Practice for Sampling Industrial Chemicals2.2Other Standard:NUREG/CR-0087,Considerations for Sampling NuclearMaterials for SNM Accounting Measurements33.T

7、erminology Definitions3.1 analysis of variancethe body of statistical theory,methods,and practice in which the variation in a set ofmeasurements,as measured by the sum of squares of themeasurements,is partitioned into several component sums ofsquares,each attributable to some meaningful cause(source

8、 ofvariation).3.2 confidence interval(a)an interval estimator used tobound the value of a population parameter and to which ameasure of confidence can be associated,and(b)the intervalestimate,based on a realization of a sample drawn from thepopulation of interest,that bounds the value of a populatio

9、nparameter with at least a stated confidence.3.3 Estimation,Estimator,Estimate:3.3.1 Estimation,in statistics,has a specific meaning,con-siderably different from the common interpretation of guess-ing,playing a hunch,or grabbing out of the air.Instead,estimation is the process of following certain s

10、tatistical prin-ciples to derive an approximation(estimate)to the unknownvalue of a population parameter.This estimate is based on theinformation available in a sample drawn from the population.3.4 estimatora function of a sample(X1,X2,.,Xn)usedto estimate a population parameter.NOTE1An estimator is

11、 a random variable;therefore,not everyrealization(x1,x2,.,xn)of the sample(X1,X2,.,Xn)will lead to thesame value(realization)of the estimator.An estimator can be a functionthat,when evaluated,results in a single value or results in an interval orregion of values.In the former case the estimator is c

12、alled a pointestimator,and in the latter case it is referred to as an interval estimator.3.5 estimate,(a:n)a particular value or values realized byapplying an estimator to a particular realization of a sample,that is,to a particular set of sample values(x1,x2,.,xn).(b:v)to use an estimator.3.6 neste

13、d design one of a particular class of experimentaldesigns,characterized by“nesting”of the sources of variation:for each sampled value of a variable A,a given number ofvalues of a second variable B is sampled;for each of these,agiven number of values of the next variable C is sampled,etc.The result i

14、s that each line of the“Expected Value of MeanSquare”column in an analysis of variance table contains all butone of the terms of the preceding line.3.7 random variable a variable that takes on any one ofthe values in its range according to a fixed probabilitydistribution.(Synonyms:chance variable,st

15、ochastic variable,variate.)1This practice is under the jurisdiction of ASTM Committee C26 on NuclearFuel Cycle and is the direct responsibility of Subcommittee C26.08 on QualityAssurance and Reference Materials.Current edition approved Jan.1,2006.Published February 2006.Originallyapproved in 1982.La

16、st previous edition approved in 1997 as C 970 87(1997).2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from National Technical Information Service,Springfield,VA22161.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.3.8 standard deviation(s.d

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2