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Sources[edit]

Because only a few commercial businesses (most notably Assessment Systems Corporation and Scientific Software International) develop specialized psychometric tools, there exist many free tools developed by researchers and educators. Important websites for free psychometric software include:

Classical test theory[edit]

Classical test theory is an approach to psychometric analysis that has weaker assumptions than item response theory and is more applicable to smaller sample sizes.

CITAS[edit]

CITAS (Classical Item and Test Analysis Spreadsheet) is a free Excel workbook designed to provide scoring and statistical analysis of classroom tests. Item responses (ABCD) and keys are typed or pasted into the workbook, and the output automatically populates; unlike other programs, CITAS does not require any 'running' or experience in psychometric analysis, making it accessible to school teachers and professors. It is available for free download ) 100% 50%;'>here.

jMetrik[edit]

jMetrik ) 100% 50%;'>[3] is free and open source software for conducting a comprehensive

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