How to Avoid Statistical Traps

Autor/in	Bracey, Gerald W.
Titel	How to Avoid Statistical Traps
Quelle	In: Educational Leadership, 63 (2006) 8, S.78-82 (5 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0013-1784
Schlagwörter	Stellungnahme; Educational Research; Statistical Data; Data Interpretation; Statistical Analysis; Research Problems; Statistical Studies; Guidelines; Item Analysis; Criticism + Suchen Sie Ihr Suchwort? Bildungsforschung; Pädagogische Forschung; Data evaluation; Datenauswertung; Statistische Analyse; Forschungskritik; Richtlinien; Itemanalyse; Kritik
Abstract	Education statistics are rarely neutral; those who collect and analyze them have different purposes. In this article, Bracey discusses several principles of data interpretation to help educators avoid falling into statistical traps. For example, because such reports as A Nation At Risk contain many "selected, spun, distorted, and even manufactured statistics," Bracey recommends, "If you find a statement the least suspect, ask to see the raw data." He provides examples illustrating why educators should also beware of selectivity, compare rhetoric with numbers, make sure that groups are comparable, know the difference between rates and scores, and do the arithmetic. (Contains 1 figure.) (Author).
Anmerkungen	Association for Supervision and Curriculum Development. 1703 North Beauregard Street, Alexandria, VA 22311-1714. Tel: 800-933-2723; Tel: 703-578-9600; Fax: 703-575-5400; Web site: http://www.ascd.org.
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10