Question: 2) Compute the difficulty(@) and discrimination (O) index for an item administered to 263 people where 74 people answered the item correctly; 32 people in

2) Compute the difficulty(@) and discrimination (O) index for an item

administered to 263 people where 74 people answered the item correctly; 32

2) Compute the difficulty(@) and discrimination (O) index for an item administered to 263 people where 74 people answered the item correctly; 32 people in upper group and 23 people in the lower group passed the item (k = 4). Optimal Level: Lower Bound: Is this a good item? Yes No

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