ERIC Number: ED167569
Record Type: Non-Journal
Publication Date: 1976-Apr
Reference Count: N/A
Limited Investigation of Effects of Stratification, Clustering, Respondent Mobility, and Overlapping Schools with the 1972 Sample. 22U-884-38.
Folsom, R. E.; Weber, J. H.
Longitudinal measures of change are the most important kinds of estimates being produced from the National Longitudinal Study of the High School Class of 1972 (NLS). Several topics are presented in this report, most of which build on previous variance components analyses. The major areas covered are effects of stratification and clustering, correlations from overlapping schools in the two NLS surveys, and mobility of the NLS 1972 cohort. The effects of clustering students and stratifying schools, based on the change-variable variance components, are discussed. This methodology parallels that developed by Moore and Shah for base-year statistics. The effects of retaining some of the previous cohort sample schools for the new cohort and the advantages of a fifty percent overlap are also described. The mobility of the first cohort of sample students has direct cost implications for followup surveys. (Author/CTM)
Publication Type: Reports - Research
Education Level: N/A
Authoring Institution: Research Triangle Inst., Research Triangle Park, NC. Center for Sampling Research and Design.
Identifiers - Assessments and Surveys: National Longitudinal Study of the High School Class of 1972