Positive grade for unchecked correct answers in a multiple-choice question

Positive grade for unchecked correct answers in a multiple-choice question

by Daniel Langr -
Number of replies: 6

If I understand Moodle correctly, I am allowed to assign a grade to each answer in a multiple-choice question, but this assignment applies only if that answer is selected (checked) by a student. What I would like is that each answer participates evenly on the final grade if it is correct, where correct may be both checked or unchecked

A simple example: a question has 3 answers, the first one is correct if it is checked (C), the other two are correct if they are unchecked (U). In that case, if a student checks all the answers (CCC), only the first one is correct and the grade should be 33,3%. If the student leaves all the answers unchecked (UUU), the first one is incorrect and the others are correct and the grade should be 66,7%. 

I don't know how to apply such grading. The one option would be to assign grades to unchecked answers. Is it possible? The other option I see would be to assign 100% to the first (should-be-checked) answer and -100% to the other (should-be-unchecked) answers. But then, I would additionally need to add 200% to the result and finally divide it by 3. Is this possible?

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In reply to Daniel Langr

Re: Positive grade for unchecked correct answers in a multiple-choice question

by Joseph Rézeau -
Picture of Core developers Picture of Particularly helpful Moodlers Picture of Plugin developers Picture of Testers Picture of Translators

Hi Daniel,

You may have your reasons but I do find your reasoning weird. Could you please provide a real-world example? From your example I suppose you want to use the multiple-choice, multiple-answer question.

"If the student leaves all the answers unchecked (UUU), the first one is incorrect and the others are correct and the grade should be 66,7%." That is not possible, if no answer is checked, the student will get the message "Please select at least one answer."

In reply to Joseph Rézeau

Re: Positive grade for unchecked correct answers in a multiple-choice question

by Daniel Langr -
Hi Joseph,

I am new to Moodle, so maybe I do not express my ideas with the right words, sorry for that. I will try again and simpler. I have a question and then multiple statements (choices/answers). Each statement may be either true or false. Then, I want a student to choose either true or false for each statement. If this choice is correct, then it should add (100% / N) to the final grade, where N is the number of statements. If it is not correct, is shouldn't add anything to the final grade.

I might have used a wrong type of question. I now tried the "OU multiple response" but this does not seem to work either.
In reply to Daniel Langr

Re: Positive grade for unchecked correct answers in a multiple-choice question

by Joseph Rézeau -
Picture of Core developers Picture of Particularly helpful Moodlers Picture of Plugin developers Picture of Testers Picture of Translators

Hi Daniel,

We've all been "new to Moodle" once, don't worry. wink

Unfortunately you did not answer my suggestion of providing a real-world example of your question. There is a question type which is not currently available from the Moodle plugins directory, which might fit the bill. It's available from GitHub at Multiple True False (ETH). You don't say if you are an admin of your moodle site or a "simple" teacher. You would need Admin role to install this question type. Does it do what you want? See screenshot below. If not, please provide a real-world example (again)!

Average of ratings:Useful (1)
In reply to Joseph Rézeau

Re: Positive grade for unchecked correct answers in a multiple-choice question

by Daniel Langr -
Yes, this is a perfect example of what I want. Thanks for the suggested plugin. Unfortunately, I am a teacher, not an admin. I will ask our IT department, though I am afraid that won't be willing to install it into the whole-university Moodle implementation just because of a single-teacher request. Thanks anyway.
In reply to Daniel Langr

Re: Positive grade for unchecked correct answers in a multiple-choice question

by Joseph Rézeau -
Picture of Core developers Picture of Particularly helpful Moodlers Picture of Plugin developers Picture of Testers Picture of Translators

Hi again, Daniel,

Yes, I know the feeling of being "just a teacher". When I was working at my university it took me a lot of patience, persuasion, cajoling, etc. to get the IT department to install plugins that were "indispensable"... just for me.

I wish you good luck.smile

In reply to Joseph Rézeau

Re: Positive grade for unchecked correct answers in a multiple-choice question

by Daniel Langr -
Joseph,

thanks a lot again. Just a final note you might be interested in. I was advised that there is another option without a need of a third-party plugin — this is the Cloze question type. There, I can define as many answers as I like with true/false correct options, such as:

False correct answer {:MCV:TRUE~=FALSE}
True correct answer {:MCV:=TRUE~TRUE}

And, this is exactly what I wanted. The only downside is that the grades must be integer numbers. If I have 5 answers, then it implies minimal total grade 5 for that question (where I would like, for instance, 3). But this can be resolved at the quiz level. It's a bit bothersome since one can forget about it and make a mistake, but it works as a workaround.