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About kuder richardson formula 20

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Discrimination is calculated with a for each-query foundation using the stage biserial, also called the Pearson solution-moment correlation coefficient. The purpose biserial figure reveals the extent to which two sets of information (In cases like this, candidates' All round exam scores and unique problem score) correlate. A Take note on https://ferdinandg790yxw0.ouyawiki.com/user

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