Part 2B - Calculating Optimal Item Difficulty
Question # 00428540
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Updated on: 11/22/2016 02:51 AM Due on: 11/22/2016
Part 2B: Calculating Optimal Item Difficulty (.5 pt. each)
1. For a test item with two response options (e.g., true/false), what is the probability of selecting
the correct answer by chance?____%
2. Calculate the optimum level of difficulty for a test questions with two response options.____
3. For a test item with three response options, what is the probability of selecting the correct
answer by chance?____%
4. Calculate the optimum level of difficulty for a test questions with three response options.
5. For a test item with four response options, what is the probability of selecting the correct
answer by chance?____%
6. Calculate the optimum level of difficulty for a test questions with four response options.
7. For a test item with five response options, what is the probability of selecting the correct
answer by chance?____%
8. Calculate the optimum level of difficulty for a test questions with five response options.___
1. For a test item with two response options (e.g., true/false), what is the probability of selecting
the correct answer by chance?____%
2. Calculate the optimum level of difficulty for a test questions with two response options.____
3. For a test item with three response options, what is the probability of selecting the correct
answer by chance?____%
4. Calculate the optimum level of difficulty for a test questions with three response options.
5. For a test item with four response options, what is the probability of selecting the correct
answer by chance?____%
6. Calculate the optimum level of difficulty for a test questions with four response options.
7. For a test item with five response options, what is the probability of selecting the correct
answer by chance?____%
8. Calculate the optimum level of difficulty for a test questions with five response options.___
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Solution: Part 2B - Calculating Optimal Item Difficulty