[MDL-66641] Discriminative efficiency is multiplied by 100 two times in the quiz statistics report - Moodle Tracker

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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:
- ci
- triaged

Affected Branches:
MOODLE_36_STABLE, MOODLE_37_STABLE, MOODLE_38_STABLE
Fixed Branches:
MOODLE_36_STABLE, MOODLE_37_STABLE
Pull from Repository:
https://github.com/timhunt/moodle.git
Pull Master Branch:
~~MDL-66641~~
Pull Master Diff URL:
https://github.com/timhunt/moodle/compare/master...MDL-66641
Testing Instructions:
Hide

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.
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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image-2019-09-19-13-48-25-208.png
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19/Sep/19 1:48 PM
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10/Sep/19 4:58 PM

Issue Links

is a regression caused by

MDL-63390 Usability improvements for statistics report

Closed

Activity

People

Assignee:: Tim Hunt

Reporter:: Иван Скляров

Peer reviewer:: Shamim Rezaie

Integrator:: Eloy Lafuente (stronk7)

Tester:: Janelle Barcega

Participants:: CiBoT, Eloy Lafuente (stronk7), Janelle Barcega, Shamim Rezaie, Tim Hunt, Иван Скляров

Component watchers:: Tim Hunt, Andrew Lyons, Huong Nguyen, Jun Pataleta, Michael Hawkins, Shamim Rezaie, Simey Lameze

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 10/Sep/19 4:55 PM

Updated:: 20/Sep/19 4:12 AM

Resolved:: 20/Sep/19 4:12 AM

Fix Release Date:: 11/Nov/19

Time Tracking

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35m