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ERIC Number: EJ941005
Record Type: Journal
Publication Date: 2011
Pages: 20
Abstractor: As Provided
Reference Count: 19
ISSN: ISSN-0022-0655
The Impact of Missing Background Data on Subpopulation Estimation
Rutkowski, Leslie
Journal of Educational Measurement, v48 n3 p293-312 Fall 2011
Although population modeling methods are well established, a paucity of literature appears to exist regarding the effect of missing background data on subpopulation achievement estimates. Using simulated data that follows typical large-scale assessment designs with known parameters and a number of missing conditions, this paper examines the extent to which missing background data impacts subpopulation achievement estimates. In particular, the paper compares achievement estimates under a model with fully observed background data to achievement estimates for a variety of missing background data conditions. The findings suggest that sub-population differences are preserved under all analyzed conditions while point estimates for subpopulation achievement values are influenced by missing at random conditions. Implications for cross-population comparisons are discussed.
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A