Assessing Test Effectiveness: Individual Rems and Student Performance
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Questions and Answers

What is the main purpose of assessing how well individual items perform in a test?

  • To determine if good students perform better than poor students (correct)
  • To identify the spread in scores among students
  • To evaluate the reliability and validity of the test
  • To understand the effectiveness of instructions given to students

    • Why is high reliability necessary for high test validity?

  • Higher reliability guarantees higher validity
  • Low reliability leads to low test validity
  • High reliability is a sufficient condition for high validity
  • High reliability is a prerequisite for high validity (correct)

    • What does it mean if good and poor students have similar chances of getting a high score on a test?

  • The test lacks validity (correct)
  • The test has high reliability
  • The test lacks instructions
  • The test has low reliability

    • What does the text suggest about item analyses in relation to test validity?

    <p>Examining items helps improve test validity by enhancing reliability</p> Signup and view all the answers

    Why might higher reliability not necessarily lead to higher validity in tests?

    <p>Consistency may still target the wrong outcomes</p> Signup and view all the answers

    What can discovering how well individual items assess intended learning outcomes help identify?

    <p>Validities of the test items</p> Signup and view all the answers

    What is the purpose of item analysis in a test?

    <p>To estimate the difficulty of each test item</p> Signup and view all the answers

    How is the index of difficulty of an item calculated?

    <p>$\frac{n_H}{N}$</p> Signup and view all the answers

    In item analysis, what is considered a 'very difficult' difficulty index range?

    <p>0.00-0.20</p> Signup and view all the answers

    What does positive discrimination imply in a test?

    <p>Bright students perform significantly better than poor students</p> Signup and view all the answers

    What does the discriminating index measure in item analysis?

    <p>The difference between high and low group performance on an item</p> Signup and view all the answers

    What is the main benefit of evaluating the effectiveness of distracters in test items?

    <p>To identify attractive incorrect alternatives</p> Signup and view all the answers

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