
Accession Number : ADA194565
Title : Normalization Factors Used in Estimating Variance.
Descriptive Note : Technical memo. no. 24 (Final),
Corporate Author : JET PROPULSION LAB PASADENA CA
Personal Author(s) : Rennie, Michael W
PDF Url : ADA194565
Report Date : 22 Jan 1987
Pagination or Media Count : 14
Abstract : This report determines the correct factor (N, N1, N2, or others  where N is the number of linesofbearing) used in estimating variance from fixing data. Four methods of estimating fixes are considered: Perpendicular, Weighted Perpendicular, Minimization of Squared Angular Error, and Minimization of Sine of Squared Angular Error. A table of results from numerical experiments using the Perpendicular method is presented. The formula for first order estimation of variance for the other three methods is derived. Evaluation of this formula and proof that the normalizing factor in all three cases is N2 is relegated to an appendix.
Descriptors : *NORMALIZING(STATISTICS), *ANALYSIS OF VARIANCE, ESTIMATES, NUMERICAL METHODS AND PROCEDURES, TABLES(DATA), STATISTICAL DATA
Subject Categories : Statistics and Probability
Distribution Statement : APPROVED FOR PUBLIC RELEASE