Types of Tests
Quick practice
Question 1 of 5
Which of the following are relevant to item discrimination index?
1. A value of 0.8 indicates easy items
2. Ranges from –1 to +1
3. Commonly measured through Point Biserial correlation
4. Evaluates mastery in variable/skill being tested
A
1, 3 and 4
B
1, 2, 3 and 4
C
2, 3 and 4
D
1 and 3
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