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ERIC Number: ED442810
Record Type: Non-Journal
Publication Date: 2000-Apr
Pages: 28
Abstractor: N/A
Reference Count: N/A
Effectiveness of Four Methods of Handling Missing Data Using Samples from a National Database.
Witta, E. Lea
The effectiveness of four methods of handling missing data in reproducing the target sample covariance matrix and mean vector was tested using three levels of incomplete cases: 30%, 50%, and 70%. Data were selected from the National Education Longitudinal Study (NELS) database. Three levels of sample sizes (500, 1000, and 2000) were used. The assumption of missing data completely at random was violated in all samples. Results indicate that listless deletion was most effective in replicating the target mean vector and covariance matrix. (Contains 2 tables, 1 figure, and 19 references.) (Author/SLD)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A