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Analyzing and using test item data

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Lance Gerard G. Abalos LPT, MA
Lance Gerard G. Abalos LPT, MA

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ANALYZING AND USING TEST ITEM DATA
Purposes and Elements of Item Analysis ,[object Object],[object Object],[object Object],[object Object]
Three Elements in an Item Analysis ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Preparing Data for Item Analysis ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Using Information about Index of Difficulty ,[object Object]
Item Group Answers A B C D Total No. of Correct Answers Difficulty Index H – L Discrimination Index 1 H 20 L 20 3 14 2 1 10 7 3 0 21 52.5 7 0.35 2 H 20 L 20 0 0 18 2 0 3 9 8 27 67.5 9 0.45 3 H 20 L 20 3 8 4 4 10 2 4 4 10 25.0 6 0.30 4 H 20 L 20 3 3 4 10 2 4 10 4 14 35.0 6 0.30 5 H 20 L 20 ,[object Object],[object Object],16 40.0 14 0.70
[object Object],[object Object],[object Object]
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
Using Information about Index of Discrimination ,[object Object],[object Object],[object Object]
[object Object],[object Object]
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
[object Object],[object Object],[object Object],[object Object]
Examining Distractor Effectiveness ,[object Object]
Developing an Item Data File ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Limitations of Item Analysis ,[object Object],[object Object]

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Analyzing and using test item data

  • 1. ANALYZING AND USING TEST ITEM DATA
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  • 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
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