'Group residuals' presentation slideshows

Item Response Theory in a Multi-level Framework

Item Response Theory in a Multi-level Framework. Saralyn Miller Meg Oliphint EDU 7309. Agenda. Item Response Theory Conceptual Overview Show Models ( Rasch , 2PL, 3PL) Example In Class Practice Differential Item Functioning Conceptual Overview Example In Class Practice.

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Box Plot

Box Plot. F-Test Results. *** Analysis of Variance Model *** Short Output: Call: aov(formula = Volume ~ Group, data = SDF9, na.action = na.exclude) Terms: Group Residuals Sum of Squares 12888.6 146259.0 Deg. of Freedom 1 39

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