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Direct linkGongjun Xu; Tony Sit; Lan Wang; Chiung-Yu Huang – Grantee Submission, 2017
Biased sampling occurs frequently in economics, epidemiology, and medical studies either by design or due to data collecting mechanism. Failing to take into account the sampling bias usually leads to incorrect inference. We propose a unified estimation procedure and a computationally fast resampling method to make statistical inference for…
Descriptors: Sampling, Statistical Inference, Computation, Generalization
OECD Publishing, 2013
The Programme for the International Assessment of Adult Competencies (PIAAC) has been planned as an ongoing program of assessment. The first cycle of the assessment has involved two "rounds." The first round, which is covered by this report, took place over the period of January 2008-October 2013. The main features of the first cycle of…
Descriptors: International Assessment, Adults, Skills, Test Construction
Cleaver, S.; Ouellette-Kuntz, H.; Sakar, A. – Journal of Intellectual Disability Research, 2010
Background: Researchers have noted difficulties in attracting adequate numbers of participants with intellectual disabilities (ID) to their studies. Methods: This study was a review of participation by adults with ID in research conducted in South Eastern Ontario over a 20-year period (1987-2006). Original research studies were identified by local…
Descriptors: Mental Retardation, Foreign Countries, Researchers, Recruitment
Tatto, Maria Teresa, Ed. – International Association for the Evaluation of Educational Achievement, 2013
The Teacher Education and Development Study in Mathematics (TEDS-M), conducted under the aegis of the International Association for the Evaluation of Educational Achievement (IEA), was designed to inform policy and practice in mathematics teacher education. For educational policymakers, TEDS-M contributes data on institutional arrangements that…
Descriptors: Mathematics Teachers, Preservice Teacher Education, Elementary School Teachers, Secondary School Teachers
Brese, Falk, Ed. – International Association for the Evaluation of Educational Achievement, 2012
The Teacher Education Study in Mathematics or TEDS-M is a study conducted under the aegis of the International Association for the Evaluation of Educational Achievement (IEA). The lead research center for the study is the International Study Center at Michigan State University (ISC/MSU). The ISC/MSU worked from 2006 to 2011 with the International…
Descriptors: Preservice Teacher Education, Elementary School Teachers, Secondary School Teachers, Mathematics Teachers
Berry, Brent – Evaluation Review, 2007
Risks of life on the street caused by inclement weather, harassment, and assault threaten the unsheltered homeless population. We address some challenges of enumerating the street homeless population by testing a novel capture-recapture (CR) estimation approach that models individuals' intermittent daytime visibility. We tested walking and…
Descriptors: Probability, Identification, Sampling, Homeless People
Wolfe, Richard G. – 1987
The Second International Mathematics Study (SIMS) of the International Association for the Evaluation of Educational Achievement (IEA) was conducted in 20 countries on two sampled populations: Population A of 13-year-olds and Population B of students studying mathematics in their final year of secondary school. Mathematics achievement was measured…
Descriptors: Academic Achievement, Algebra, Arithmetic, Calculators
