Ibnu Rafi

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Questions related from Ibnu Rafi

Is there literature suggesting to exclude item with negative point-biserial in CTT first before we perform item analysis with IRT approach?

I have been suggested to exclude item whose point-biserial correlation coefficient (indicates that this item fails to discriminate student competence, based on CTT) is negative before we perform...

13 June 2023 879 0 View

Polytomously-scored item discriminating power

JMetrik User Guide mentions that "Item-total correlation type – Select Pearson correlation to have jMetrik compute Pearson correlations (point-biserial for binary items, Pearson correlation for...

01 January 1970 4,108 3 View