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Huang, Francis L. – Educational and Psychological Measurement, 2018

Cluster randomized trials involving participants nested within intact treatment and control groups are commonly performed in various educational, psychological, and biomedical studies. However, recruiting and retaining intact groups present various practical, financial, and logistical challenges to evaluators and often, cluster randomized trials…

Descriptors: Multivariate Analysis, Sampling, Statistical Inference, Data Analysis

Padilla, Miguel A.; Divers, Jasmin – Educational and Psychological Measurement, 2016

Coefficient omega and alpha are both measures of the composite reliability for a set of items. Unlike coefficient alpha, coefficient omega remains unbiased with congeneric items with uncorrelated errors. Despite this ability, coefficient omega is not as widely used and cited in the literature as coefficient alpha. Reasons for coefficient omega's…

Descriptors: Reliability, Computation, Statistical Analysis, Comparative Analysis

Patton, Jeffrey M.; Cheng, Ying; Yuan, Ke-Hai; Diao, Qi – Educational and Psychological Measurement, 2014

When item parameter estimates are used to estimate the ability parameter in item response models, the standard error (SE) of the ability estimate must be corrected to reflect the error carried over from item calibration. For maximum likelihood (ML) ability estimates, a corrected asymptotic SE is available, but it requires a long test and the…

Descriptors: Sampling, Statistical Inference, Maximum Likelihood Statistics, Computation

Chen, Pei-Hua; Chang, Hua-Hua; Wu, Haiyan – Educational and Psychological Measurement, 2012

Two sampling-and-classification-based procedures were developed for automated test assembly: the Cell Only and the Cell and Cube methods. A simulation study based on a 540-item bank was conducted to compare the performance of the procedures with the performance of a mixed-integer programming (MIP) method for assembling multiple parallel test…

Descriptors: Test Items, Selection, Test Construction, Item Response Theory

Finch, W. Holmes; French, Brian F. – Educational and Psychological Measurement, 2012

Effect size use has been increasing in the past decade in many research areas. Confidence intervals associated with effect sizes are encouraged to be reported. Prior work has investigated the performance of confidence interval estimation with Cohen's d. This study extends this line of work to the analysis of variance case with more than two…

Descriptors: Computation, Statistical Analysis, Effect Size, Comparative Analysis

Peng, Chao-Ying Joanne; Zhu, Jin – Educational and Psychological Measurement, 2008

For the past 25 years, methodological advances have been made in missing data treatment. Most published work has focused on missing data in dependent variables under various conditions. The present study seeks to fill the void by comparing two approaches for handling missing data in categorical covariates in logistic regression: the…

Descriptors: Regression (Statistics), Comparative Analysis, Evaluation Methods, Equations (Mathematics)

Wilcox, Rand R. – Educational and Psychological Measurement, 2006

For two random variables, X and Y, let D = X - Y, and let theta[subscript x], theta[subscript y], and theta[subscript d] be the corresponding medians. It is known that the Wilcoxon-Mann-Whitney test and its modern extensions do not test H[subscript o] : theta[subscript x] = theta[subscript y], but rather, they test H[subscript o] : theta[subscript…

Descriptors: Scores, Inferences, Comparative Analysis, Statistical Analysis

Peer reviewed

LeBlanc, William G.; Williams, Richard H. – Educational and Psychological Measurement, 1997

The Statistical Analysis System was used to program a statistical procedure developed by K. J. Levy (1975). The focus was on Dunnett-like pairwise multiple comparisons among sample variances. An example using data from G. Glass and K. Hopkins (1996) is used to illustrate a computer run with this program. (Author/SLD)

Descriptors: Comparative Analysis, Computation, Sampling

Peer reviewed

LeBlanc, William G.; Williams, Richard H. – Educational and Psychological Measurement, 1997

A large sample technique attributed to L. Marascuilo, based on the multiple comparison technique of H. Scheffe, was programmed with the Statistical Analysis System (SAS), focusing on comparisons among independent binomial samples. Use of the SAS program is discussed. (SLD)

Descriptors: Comparative Analysis, Computer Software, Sample Size, Sampling

Peer reviewed

Pedulla, Joseph J.; Airasian, Peter W. – Educational and Psychological Measurement, 1980

Estimates of population values obtained using three sampling techniques (simple random sampling, stratified random sampling, and cluster sampling) and three size samples for each technique (10%, 25% and 50%) were compared with known "population" values. 25% simple random sample provided quite good estimates of the "population"…

Descriptors: Comparative Analysis, Elementary Secondary Education, Feasibility Studies, Foreign Countries