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Camilleri, Liberato; Cefai, Carmel – World Journal of Education, 2013
Multiple linear regression and ANOVA models are widely used in applications since they provide effective statistical tools for assessing the relationship between a continuous dependent variable and several predictors. However these models rely heavily on linearity and normality assumptions and they do not accommodate categorical dependent…
Descriptors: Regression (Statistics), Models, Predictor Variables, Predictive Measurement
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Baker, Frank B. – Applied Psychological Measurement, 1988
The form of item log-likelihood surface was investigated under two-parameter and three-parameter logistic models. Results confirm that the LOGIST program procedures used to locate the maximum of the likelihood functions are consistent with the form of the item log-likelihood surface. (SLD)
Descriptors: Estimation (Mathematics), Factor Analysis, Graphs, Latent Trait Theory