rProphecy rProphecy calculates the Spearman-Brown 'Prophecy' formula that estimates the reliability of a test
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rProphecy Tags

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rProphecy Description

rProphecy is a standalone Windows application that calculates the Spearman-Brown 'Prophecy' formula that estimates the reliability of a test if its number of items is altered. You will have the possibility to enter the reliability of the original test, as well as the proportional change in test length.

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