Study on the DoD-method of measurement data evaluation
Description
The DoD-method (Distribution of Differences) for measurement data evaluation allows meaningful estimation of variances or standard deviations without the necessity to reject outlier values. It has been developed at KfK in particular for evaluating analytical data. The basic elements used for statistical treatment are all D=(N-1)*N/2 absolute differences that can be formed between N measurement values. For N<=10 it is shown that the D absolute differences can be divided into (N-1) subgroups, each of them consisting of N/2 stochastically independent elements. Furthermore, a relationship is given between the estimates for the standard deviations of the subgroups and the estimate for the standard deviation of the total group of absolute differences. Numerical examples are presented. (orig./HP)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Das am KfK entwickelte DoD-Verfahren zur Auswertung analytischer Messdaten ermoeglicht die sinnvolle Schaetzung von Varianzen bzw. Standardabweichungen ohne den Ausschluss von Ausreisserwerten. Es verwendet als statistische Grundelemente alle D=(N-1)*N/2 absoluten Differenzen, die zwischen N Messwerten gebildet werden koennen. Fuer N<=10 wird gezeigt, dass sich die Menge der D absoluten Differenzen in (N-1) Teilmengen zerlegen laesst, von denen jede aus N/2 stochastisch unabhaengigen Elementen besteht. Ausserdem wird eine Ungleichung fuer den Zusammenhang der Schaetzwerte der Standardabweichungen dieser Teilmengen vom Schaetzwert der Standardabweichungen der Gesamtmenge angegeben. Die Aussagen werden an Zahlenbeispielen illustriert. (orig./HP)
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Additional details
Publishing Information
- Imprint Pagination
- 18 p.
- Report number
- KFK--4077
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 17090344
- Subject category
- S98: NUCLEAR DISARMAMENT, SAFEGUARDS AND PHYSICAL PROTECTION; S99: GENERAL AND MISCELLANEOUS;
- Descriptors DEI
- COMPARATIVE EVALUATIONS; DATA PROCESSING; FISSIONABLE MATERIALS; INTERLABORATORY COMPARISONS; QUANTITATIVE CHEMICAL ANALYSIS; SAFEGUARDS; STATISTICS
- Descriptors DEC
- CHEMICAL ANALYSIS; EVALUATION; MATERIALS; MATHEMATICS
Optional Information
- Secondary number(s)
- EUR--9616e.