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  1. Moodle
  2. MDL-66641

Discriminative efficiency is multiplied by 100 two times in the quiz statistics report

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • 3.6.6, 3.7, 3.8
    • 3.6.7, 3.7.3
    • Quiz
    • MOODLE_36_STABLE, MOODLE_37_STABLE, MOODLE_38_STABLE
    • MOODLE_36_STABLE, MOODLE_37_STABLE
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      1. Create a quiz containing two true-false questions.
      2. Attempt the quiz as three different students, the first two students should get both questions right, the third should get both questions wrong.
      3. As teacher/admin, got to Quiz settings -> Results -> statistics
      4. Verify that the values in the Discriminative efficiency column are 100% (not 10000%).

      Alternatively: Go to https://qa.moodle.net/mod/quiz/report.php?id=34&mode=statistics, and verift that the values in the Discriminative efficiency column are (-)100% (not 10000%) if you want to avoid the setup.

      Show
      Create a quiz containing two true-false questions. Attempt the quiz as three different students, the first two students should get both questions right, the third should get both questions wrong. As teacher/admin, got to Quiz settings -> Results -> statistics Verify that the values in the Discriminative efficiency column are 100% (not 10000%). Alternatively: Go to https://qa.moodle.net/mod/quiz/report.php?id=34&mode=statistics , and verift that the values in the Discriminative efficiency column are (-)100% (not 10000%) if you want to avoid the setup.

    Description

      In /mod/quiz/report/statistics/statistics_table.php in function col_discriminative_efficiency discriminative efficiency is multiplied by 100 second time in function format_percentage.

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              timhunt Tim Hunt
              иванскляров Иван Скляров
              Shamim Rezaie Shamim Rezaie
              Eloy Lafuente (stronk7) Eloy Lafuente (stronk7)
              Janelle Barcega Janelle Barcega
              Tim Hunt, Andrew Lyons, Huong Nguyen, Jun Pataleta, Michael Hawkins, Shamim Rezaie, Simey Lameze
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              Dates

                Created:
                Updated:
                Resolved:
                11/Nov/19

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