Including negative point value to "Multiple Correct, Multiple Selection" questions
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Keli Amann May 16, 2014 at 6:14 PM
looks good on http://nightly2.sakaiproject.org:8082/. I created question with 2 correct out of 4. I answered only one correct selection and got -5/10. I made one incorrect selection and got -5/10. I answered all 4 selections and got -5. I answered with both correct selections and got 10.

Hudson CI Server May 16, 2014 at 4:06 AM
Integrated in sakai-trunk-java-1.7 #245 (See http://builds.sakaiproject.org:8080/job/sakai-trunk-java-1.7/245/)
SAM-2213: Including negative point value to "Multiple Correct, Multiple Selection" questions (Revision 309573)
Result = SUCCESS

Raúl Sánchez Vegas October 1, 2013 at 10:59 AM
Hi
The attached images show the differences between the current behaviour and the contributed patch. The example that you suggested will work as follows:
The example: "I have a Multiple correct, multiple selection question, each correct answer is worth 0.25, student have to choose 4 correct answers,If a student choose 2 correct and 2 incorrect they are getting an auto score of 0.5."
In this context, neither in "the current behaviour" nor in "the contributed patch behaviour" the student would get an autoscore of 0.5.
Current behaviour(2.9.x):
For every mistake, one correct answer will be deducted. The student selects 2 correct answers and 2 incorrect answers. So for 2 mistakes 2 correct answers will be deducted, therefore the student gets 0 points:
2 correct answers - 2 incorrect answers => 0 points.
Contributed patch behaviour:
If the student selects at least one incorrect answer, the question is wrong. The student has selected 2 incorrect answers so the question is wrong and the student gets 0 points or "the negative point value" if the question has it.
Regards,
Raúl

Narasi Narasi September 26, 2013 at 1:55 PM
I am wondering if this is a default behavior? on a production instance CLE 2.9X SAM 2.9.x r113710
I have a Multiple correct, multiple selection question, each correct answer is worth 0.25, student have to choose 4 correct answers, If a student choose 2 correct and 2 incorrect they are getting an auto score of 0.5. Please advise.
Thanks,
Narasi

Raúl Sánchez Vegas September 24, 2013 at 3:34 AM
Hi
We have developed patches which include this functionality either for trunk and for 2.9.x, files: MCMS_2.9.x.patch, MCMS_Trunk_(All or Nothing).patch and MCMS_Trunk_(Right Less Wrong).patch.
During the last two years we have been using this new functionality in production(University of Murcia) without any problems.
Regards,
Raúl
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Taking into account that "Multiple Choice, Single Correct" questions allow negative point value we see no
reason why "Multiple Correct, Multiple Selection" questions cannot allow the negative point value.
Anyone has concerns about it?