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The DIF-Free-Then-DIF Strategy for the Assessment of Differential Item Functioning

The DIF-Free-Then-DIF Strategy for the Assessment of Differential Item Functioning. Establish common metric for DIF assessment. Equal-mean-difficulty (EMD) All-other-item (AOI) Constant-item (CI). Equal-mean-difficulty (EMD).

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Evaluating Algebraic Expressions

Evaluating Algebraic Expressions. 6 + 2x. Variable:. Is a quantity that can change or vary. Mathematicians use letters to represent variables. . Constant:. A quantity that does not change. Expression:. Is a mathematical phrase involving constants, variables, and operation symbols.

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Free item - PowerPoint PPT Presentation

The DIF-Free-Then-DIF Strategy for the Assessment of Differential Item Functioning

Evaluating Algebraic Expressions