Collinearity in Least-Squares Analysis

Autor/in	de Levie, Robert
Titel	Collinearity in Least-Squares Analysis
Quelle	In: Journal of Chemical Education, 89 (2012) 1, S.68-78 (11 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/ed100947d
Schlagwörter	Chemistry; Mechanics (Physics); Data Analysis; Textbooks; Science Instruction; Least Squares Statistics; Kinetics; Science Experiments; College Science; Undergraduate Study; Scientific Concepts; Computer Uses in Education; Equations (Mathematics); Spreadsheets + Suchen Sie Ihr Suchwort? Chemie; Mechanik; Auswertung; Textbook; Text book; Schulbuch; Lehrbuch; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Kinetik; Grundstudium; Computernutzung; Equations; Mathematics; Gleichungslehre; Spread sheet; Spredsheets; Spreadsheet; Tabellenkalkulation
Abstract	How useful are the standard deviations per se, and how reliable are results derived from several least-squares coefficients and their associated standard deviations? When the output parameters obtained from a least-squares analysis are mutually independent, as is often assumed, they are reliable estimators of imprecision and so are the functions derived from them. But when these parameters have strong mutual dependencies, as is the rule rather than the exception in chemical data analysis, a more sophisticated approach to the statistical imprecision is required than is described in most chemistry textbooks. For the analysis of data from a typical kinetic experiment in physical chemistry, this is illustrated numerically as well as graphically. (Contains 2 tables and 13 figures.) (As Provided).
Anmerkungen	Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10