This paper provides a framework for developing sampling designs in mixed methods research. First, we present sampling schemes that have been associated with quantitative and qualitative research. Second, we discuss sample size considerations and provide sample size recommendations for each of the major research designs for quantitative and…

The National Food and Agriculture Council of the Philippines regularly requires rapid feedback data for analysis, which will assist in monitoring programs to improve and increase the production of selected crops by small scale farmers. Since many other development programs in various subject matter areas also require similar statistical…

A stratified two-stage cluster sample design was chosen for the Texas Assessment Project and is described in this document. The sample was designed so as to achieve a chosen level of precision in item analysis data within each of the 20 geographic regions chosen for analysis. Four sampling frames were developed: 9-year-olds; sixth graders;…

Suggestions and guidelines for using the Bureau of the Census' Current Population Survey (CPS) files are provided. CPS is based on the civilian component of a national probability sample of households and is conducted by the Bureau of the Census. The survey gathers employment data on a continuing basis, as well as supplemental information on such…

This report describes efforts to develop sampling methods to be used in national or regional studies of migrant and seasonal farm workers (MSFWs). Several facets of the MSFWs' lifestyle create sampling difficulties. One is mobility. Although the dynamic nature of MSFWs' movement is partly understood, it is sufficiently unpredictable to create…

The proposed research design, to be actualized beginning in 1969, was evolved to determine the nature and prevalence of mental retardation in Canada and to relate them to other variables. Issues raised concerning both nature and prevalence were reviewed as were surveys in seven different geographic areas. A pilot study conducted in two small…

Problems of obtaining a representative sample for a national survey are discussed, and the experiences of Educational Testing Service are used as examples of some methods used to cope with these problems. It is suggested that researchers: (1) capitalize on some existing program; (2) establish in the minds of the possible examinees and the possible…

Synthetic estimation is a statistical technique that estimates small-area statistics by combining national estimates of the relevant characteristics with estimates of other known characteristics of the small geographic area. The advantages of the synthetic estimation approach to local estimation are its intuitive appeal, its simplicity, and its…

A framework is described for preparing process profiles of two different surveys conducted by the National Center for Education Statistics (NCES): the Recent College Graduates Survey and the Higher Education General Information Survey (HEGIS) Fall Enrollment Survey. The process profile examines the adequacy of the entire survey process, using…

This report provides the statistical tools necessary to measure the extent of error that exists in organizational record data and group survey data. It is felt that traditional methods of measuring error are inappropriate or incomplete when applied to organizational groups, especially in studies of organizational change when the same variables are…

This memorandum demonstrates a variance components methodology for partitioning the overall design effect (D) for a ratio mean into stratification (S), unequal weighting (W), and clustering (C) effects, so that D = WSC. In section 2, a sample selection scheme modeled after the National Longitudinal Study of the High School Class of 1972 (NKS)…

This notebook contains 21 standards established by the Center for Educational Statistics (CES); CES legislation; and a description of the CES publication and publication review processes. The publication clearance procedures and the external advice and peer review policies are established by the Office of Educational Research and Improvement…

A new Joint Comprehensive Evaluation System for the assessment of 15 different federal programs has been developed by the U.S. Office of Education. In this system these diverse program services will be thought of as resources available to meet the needs of critical target groups. Using this approach, a set of nine crucial questions that need to be…

To establish a comprehensive national database on postsecondary student financial aid, the National Center for Education Statistics conducted the 1987 National Postsecondary Student Aid Study (NPSAS). Objectives were to: (1) determine the costs of postsecondary education for aided and non-aided students; (2) evaluate how students finance their…