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What is a major threat to the validity of subjective

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3. What is a major threat to the validity of subjective test items?a. the potential for biasb. the time required to complete the testc. the students' handwriting abilitiesd. the time required to prepare the test
4. What does it mean when a test item reflects extrinsic ambiguity?
5. One hundred students are in each of the upper and lower groups. Of those,50 students in the upper group and 80 students in the lower group answereda question correctly. What is the index of discrimination for this question?

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