A set was administered to 81 students. The first 8 items were analyzed for facility and discrimination. The number of correct responses from the top (t) 27% and bottom (B) 27% are shown below. Fill-in the rest of the columns (Df, Di and Remarks) for each items.



Item no. t b Df Di re-
1 18 12 marks
2 20 13
3 16 6
4 22 1
5 12 12
6 8 14
7 20 6
8 9 10

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