Modeling Zero-Inflated and Overdispersed Count Data: An Empirical Study of School Suspensions

Autor/in	Desjardins, Christopher David
Titel	Modeling Zero-Inflated and Overdispersed Count Data: An Empirical Study of School Suspensions
Quelle	In: Journal of Experimental Education, 84 (2016) 3, S.449-472 (24 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	Weitere Informationen
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-0973
DOI	10.1080/00220973.2015.1054334
Schlagwörter	Suspension; Statistical Analysis; Models; Data; Probability; Regression (Statistics); Goodness of Fit; Comparative Analysis + Suchen Sie Ihr Suchwort? Ausschluss; Schulausschluss; Statistische Analyse; Analogiemodell; Daten; Wahrscheinlichkeitsrechnung; Wahrscheinlichkeitstheorie; Regression; Regressionsanalyse
Abstract	The purpose of this article is to develop a statistical model that best explains variability in the number of school days suspended. Number of school days suspended is a count variable that may be zero-inflated and overdispersed relative to a Poisson model. Four models were examined: Poisson, negative binomial, Poisson hurdle, and negative binomial hurdle. Additionally, the probability of a student being suspended for at least 1 day was modeled using a binomial logistic regression model. Of the count models considered, the negative binomial hurdle model had the best fit. Modeling the probability of a student being suspended for at least 1 day using a binomial logistic regression model with interactions fit both the training and test data and had adequate fit. Findings here suggest that both the negative binomial hurdle and the binomial logistic regression models should be considered when modeling school suspensions. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01