Accession Number : AD0882321

Title :   Component Variance Methods for Establishing CEP Confidence Bounds Using Component Error Source Statistics.

Descriptive Note : Technical note 22 Jun 69-26 Mar 70,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CA SYSTEMS EVALUATION DEPT

Personal Author(s) : Malick, John D. ; Riedel, Alfred F.

Report Date : MAR 1971

Pagination or Media Count : 88

Abstract : Two methods for calculating upper confidence limits for a variance, Sigma (Subscript T, superscript 2), have been developed for the case where individual contributors to the total variance can be measured. The methods can reduce the upper bound--or the number of tests--considerably when two or more component variances are of roughly equal magnitude. Both methods are conservative (i.e., introduce additional confidence) and yield the classical, chi-square result when a single component variance is much larger than the others. The methods are valid even for cases where the component statistics are based on different numbers of tests and do not require a priori bounds of relative component contributions.

Descriptors :   (*CIRCULAR ERROR PROBABLE, REENTRY VEHICLES), (*IMPACT PREDICTION, CONFIDENCE LIMITS), ERRORS, STATISTICAL DISTRIBUTIONS, GUIDANCE, CONTROL SYSTEMS, STATISTICAL TESTS, ACCURACY, MONTE CARLO METHOD, MULTIVARIATE ANALYSIS, STATISTICAL ANALYSIS, INEQUALITIES, ANALYSIS OF VARIANCE, TABLES(DATA), GRAPHICS.

Subject Categories : Statistics and Probability
      Fire Control and Bombing Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE