11. Interpretation of the Difficulty Index Range Difficulty Level 20 & below 21 – 40 41 – 60 61 – 80 81 & above Very Difficult Difficult Average Easy Very Easy
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14. Interpretation of the Index of Discrimination Range Verbal Description .40 & above .30 – .39 .20 – .29 .09 – .19 Very Good Item Good Item Fair Item Poor Item