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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

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 3.6.6, 3.7, 3.8
    • Fix Version/s: 3.6.7, 3.7.3
    • Component/s: Quiz
    • Labels:
    • Testing Instructions:
      Hide
      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.
    • Affected Branches:
      MOODLE_36_STABLE, MOODLE_37_STABLE, MOODLE_38_STABLE
    • Fixed Branches:
      MOODLE_36_STABLE, MOODLE_37_STABLE
    • Pull 3.7 Branch:
    • Pull Master Branch:

      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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              Assignee:
              timhunt Tim Hunt
              Reporter:
              иванскляров Иван Скляров
              Peer reviewer:
              Shamim Rezaie
              Integrator:
              Eloy Lafuente (stronk7)
              Tester:
              Janelle Barcega
              Participants:
              Component watchers:
              Tim Hunt, Andrew Nicols, Jun Pataleta, Michael Hawkins, Shamim Rezaie, Simey Lameze
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:
                Fix Release Date:
                11/Nov/19

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