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, N-1, N-2, or others - where N is the number of lines-of-bearing) 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 N-2 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