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Questions and Answers
What does IRT focus on modeling?
What does IRT focus on modeling?
- The time taken by an individual to respond to an item
- The probability of a person's response to an item as a function of their ability or trait level (correct)
- The absolute correctness of an individual's response to an item
- The number of attempts an individual makes to respond to an item
What does IRT assume about each test item?
What does IRT assume about each test item?
- Each test item has inherent characteristics such as difficulty and discrimination parameters (correct)
- Each test item has a random difficulty level for different individuals
- Each test item has a fixed and unchangeable difficulty level
- Each test item has no influence on assessing an individual's ability
What is the purpose of item calibration in IRT?
What is the purpose of item calibration in IRT?
- To increase the discrimination parameter of items for better accuracy
- To determine the parameters of items, aiding in constructing accurate and fair tests (correct)
- To eliminate items that do not align with the test objectives
- To change the difficulty level of items based on individual responses
What kind of information does IRT provide about test items?
What kind of information does IRT provide about test items?
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What does IRT provide a way to evaluate?
What does IRT provide a way to evaluate?
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