A Graphical Approach to Item Analysis. Research Report. ETS RR-04-10

Autor/inn/en	Livingston, Samuel A.; Dorans, Neil J.
Titel	A Graphical Approach to Item Analysis. Research Report. ETS RR-04-10
Quelle	In: ETS Research Report Series, (2004), (23 Seiten)Infoseite zur Zeitschrift PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	2330-8516
Schlagwörter	Item Analysis; Computation; Difficulty Level; Test Items; Statistical Analysis; Graphs; Item Response Theory; Sampling; Correlation + Suchen Sie Ihr Suchwort? Itemanalyse; Schwierigkeitsgrad; Test content; Testaufgabe; Statistische Analyse; Grafische Darstellung; Item-Response-Theorie; Korrelation
Abstract	This paper describes an approach to item analysis that is based on the estimation of a set of response curves for each item. The response curves show, at a glance, the difficulty and the discriminating power of the item and the popularity of each distractor, at any level of the criterion variable (e.g., total score). The curves are estimated by Gaussian kernel smoothing, a weighted moving average process with a parameter that can be varied at the user's discretion. The response curve for the correct answer can be accompanied by curves indicating a confidence region. The response curves also form the basis for estimating item statistics for any group of examinees for which the distribution of the criterion variable is known. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01