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KNES 349 Name Measurement and Statistics in Kinesiology Developing...

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KNES 349 Name Measurement and Statistics in Kinesiology Developing Written Tests Fall 2021 / 10 pts. Assignment #9 1. Three hundred students took a written exam. For a subsequent item analysis, how many answer sheets should be used from students considered to be in the upper group? 2. In an item analysis, the upper group and the lower group consist of 40 students each. In the upper group, 36 got the answer to an item correct; in the lower group, 8 got it correct. a. What is the index of difficulty (D) for this item? b. What is the index of discrimination (r) for this item? 0. Based upon your responses to parts (a) and (b), how would you describe the characteristics of the item? For example, is it a good item? Why or why not? 3. What is the major problem with essay examinations? Hint: It is always an issue.

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