Unit5disc2 Template
2cre8joyThe following grid presents both item difficulty and discrimination indices for four different items on the test, THING.
THING
Item-Difficulty Index
Item-Discrimination Index
Decision: Retain or Remove
Item 1
1.00
0.00
Item 2
.60
.20
Item 3
.60
.60
Item 4
.60
-.100
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